The Forge Isaac Quest (March 2026) Complete Health Potion Guide

Updated by Nikhil Desai
December 6, 2025
GamingRoblox

Isaac’s Health Potion quest in The Forge Roblox is one of the quickest and most rewarding early-game quests, yet it continues to stump countless players who can’t figure out why Isaac keeps rejecting their potions. This comprehensive guide will walk you through every aspect of the quest, from finding Isaac’s location to delivering the correct potion and claiming your valuable rewards.

Isaac Health Potion Quest

Quest Element	Details
NPC Location	Forgotten Kingdom, tent near cave entrance
Required Item	Health Potion I
Item Cost	$150
Item Location	Maria’s Potion Shop, Stonewake’s Cross
Rewards	Large XP bonus, Cure for Isaac badge
Quest Time	Under 5 minutes
Level Requirement	Level 10 (to access Forgotten Kingdom)

Where to Find Isaac in The Forge?

Isaac is located in the Forgotten Kingdom, which serves as the second main area in The Forge Roblox. You’ll need to reach Level 10 and complete all of Sensei Moro’s quests (including “End of the Beginning”) before unlocking access to this area.

Detailed Directions to Isaac:

From Spawn: Head east from the Forgotten Kingdom spawn point
Greedy Cey’s Stall: Turn right when you reach Greedy Cey’s merchant stall
Follow the Path: Continue north, then turn left to head east
Through the Gate: Pass through the large castle-style gate
Left Turn: Take another left turn before reaching the Wizard’s house
Up the Slope: Follow the path up a slope to the south
Camp Location: You’ll find a small camp outside the Ruined Cave
Isaac’s Tent: Look for Isaac sitting under a tent on the northern side of the camp

Visual Landmarks:

Large cannon that launches you toward the cave
Main campfire in the center of the camp
Henry NPC (Isaac is to the left of Henry)
Ruined Cave entrance (Isaac is opposite this entrance)

When you find Isaac, you’ll notice he appears injured with bandages and messy hair—this is your visual confirmation you’ve found the right NPC.

How to Start Isaac’s Health Potion Quest?

Starting Isaac’s quest is straightforward, but you need to choose the correct dialogue options to trigger it properly. Follow these steps exactly:

Step-by-Step Quest Initiation:

Approach Isaac: Walk up to Isaac and press E to interact with him
First Dialogue: Select the option “What happened to you?”
Listen to His Story: Isaac will explain his injury and what happened to him
Accept the Quest: Choose “Sure, what do you need?” to officially begin the quest

Isaac will then ask you to bring him a Health Potion. This is where many players get confused, as the game doesn’t specify exactly which potion he needs.

Common Mistake: Some players skip through dialogue too quickly and miss the quest trigger. Make sure to read through all options and select the correct responses to activate the quest properly.

Which Potion Does Isaac Accept? (The Critical Detail)

This is the most important part of the quest and where most players get stuck. Isaac only accepts Health Potion I—nothing else will work.

Why Players Get Stuck:

Health Potion II Confusion: Many players buy Health Potion II from the Forgotten Kingdom potion shop (costs 350 Gold)
Rejection Message: When you try to give Isaac Health Potion II, he responds with “Is this a joke?”
Assumption Error: Players assume the more expensive, higher-level potion would be the correct choice

The Correct Potion:

Name: Health Potion I
Cost: $150
Appearance: Green bottle/potion
Location: Maria’s Potion Shop in Stonewake’s Cross
Effect: Basic healing potion (less potent than Health Potion II)

Expert Insight: The quest is designed to teach players about traveling between areas using the Portal Tool and about attention to detail in quest requirements. It’s a clever way to introduce game mechanics while providing a valuable progression opportunity.

Where to Get Health Potion I?

To complete Isaac’s quest, you’ll need to travel back to Stonewake’s Cross to purchase the correct potion. Here’s exactly how to do it:

Step-by-Step Potion Acquisition:

Use Portal Tool: Open your inventory and use the Portal Tool to teleport to Stonewake’s Cross
Locate Maria’s Shop: Find Maria’s Potion Shop in the main area of Stonewake’s Cross
Shop Location: The shop is located near Sensei Moro and the forging anvil
Purchase Health Potion I: Buy the green Health Potion I for $150
Verify Purchase: Make sure you have Health Potion I (not Health Potion II) in your inventory

Maria’s Potion Shop Details:

NPC: Maria (potion merchant)
Shop Position: Main area, beside Sensei Moro NPC
Potion Appearance: Green-colored potion bottle
Cost: 150 Gold (significantly cheaper than Health Potion II)

Pro Tip: Don’t accidentally drink the potion! Keep it in your inventory to give to Isaac. If you need more information about potions in The Forge, check out our complete potions guide for all locations and effects.

How to Turn In the Potion and Complete the Quest?

Once you have the correct Health Potion I, follow these steps to complete the quest:

Quest Completion Steps:

Return to Forgotten Kingdom: Use your Portal Tool to teleport back to the Forgotten Kingdom
Navigate to Isaac: Follow the same path you took earlier to reach Isaac’s camp
Prepare the Potion: Click on Health Potion I in your item bar (do NOT drink it)
Interact with Isaac: Press E to talk to Isaac
Select Correct Dialogue: Choose “Here is your potion” from the dialogue options
Watch the Transformation: Isaac will drink the potion and instantly heal

Visual Changes When Isaac Heals:

Hair: Returns to normal, neat appearance
Bandages: All bandages disappear
Overall Appearance: Isaac looks healthy and grateful
Animation: You’ll see a healing effect as he drinks the potion

Quest Rewards and Benefits 2026

Completing Isaac’s Health Potion quest provides valuable rewards that make it well worth your time:

Primary Rewards:

Large XP Bonus: Substantial experience points that help with leveling up
Cure for Isaac Badge: Exclusive badge for your Roblox profile
Level Progression: The XP gain increases your maximum stamina and stash capacity

Secondary Benefits:

Quick Completion: Quest takes less than 5 minutes from start to finish
Low Cost: Only requires $150 investment
Early Game Progression: Perfect for beginners and mid-game players
Portal Tool Practice: Teaches effective use of teleportation mechanics

Value Assessment: This quest offers one of the best XP-to-cost ratios in early game progression, making it essential for efficient leveling. The XP gained can significantly boost your character’s development, especially when combined with other progression strategies.

Why Isaac Might Reject Your Potion (Troubleshooting)

If Isaac refuses to take your potion, don’t worry—this is a common issue with simple solutions:

Common Reasons for Rejection:

Wrong Potion Type: You’re offering Health Potion II instead of Health Potion I
Potion Not Selected: You haven’t clicked the potion in your item bar before interacting
Quest Not Started: You didn’t properly initiate the quest with the correct dialogue options
Glitch Occurrence: Rare server or client-side issues

Step-by-Step Troubleshooting:

Check Your Potion: Verify you have Health Potion I (green bottle, costs $150)
Restart Quest: Leave the area and return, then re-initiate the conversation with Isaac
Select Potion: Make sure to click on Health Potion I in your inventory before talking to Isaac
Server Hop: Try switching to a different server if you suspect a glitch
Contact Support: If issues persist, reach out to The Forge’s official Discord for assistance

Advanced Tips and Strategies

Efficiency Strategies:

Portal Mastery: Keep your Portal Tool easily accessible for quick travel between areas
Batch Processing: Complete multiple Forgotten Kingdom quests in one trip to maximize efficiency
Resource Management: Always keep $150 reserved for Health Potion I when planning to visit Isaac

Progression Integration:

Level Timing: Complete this quest as soon as you reach Level 10 for maximum early-game benefit
Quest Synergy: Combine with other Forgotten Kingdom quests for optimal progression
Badge Collection: The Cure for Isaac badge contributes to your overall Roblox achievement collection

Money-Saving Tips:

Avoid Wrong Purchases: Double-check you’re buying Health Potion I, not the more expensive Health Potion II
Quest Planning: Plan your route to minimize unnecessary travel between areas
Resource Prioritization: Focus on quests with the best XP-to-cost ratios like Isaac’s quest

Common Mistakes to Avoid

Critical Errors:

Buying Health Potion II: This is the most common and costly mistake players make
Skipping Dialogue: Missing the proper quest initiation by rushing through conversations
Drinking the Potion: Accidentally consuming the Health Potion I instead of giving it to Isaac
Wrong Area: Looking for Isaac in Stonewake’s Cross instead of the Forgotten Kingdom

Minor but Annoying Mistakes:

Poor Navigation: Getting lost in the Forgotten Kingdom while trying to find Isaac
Inventory Management: Not having enough space to carry the Health Potion I
Timing Issues: Attempting the quest before reaching Level 10
Portal Misuse: Using the Portal Tool incorrectly and ending up in the wrong location

Platform-Specific Information

PC/Mac:

Controls: Use E to interact with Isaac and other NPCs
Inventory Management: Click items in your hotbar to select them before interaction
Camera Control: Use mouse to adjust view for better navigation in the Forgotten Kingdom

Mobile:

Controls: Tap the interact button when near Isaac
Inventory Access: Tap the inventory icon and select the potion before interaction
Movement: Use virtual joystick for precise movement in tight camp areas

Console:

Controls: Use the designated interact button (varies by console)
Inventory: Access through controller menu and select items with D-pad
Navigation: Use analog sticks for smooth movement around the camp area

Community Resources and Official Links

Official Resources:

Discord Server: Join the official The Forge Discord for community support
Twitter: Follow @FireAtacck for official updates and announcements
Roblox Group: Join the official Roblox group for game news and events

Community Resources:

Wiki: Visit The Forge Wiki for comprehensive game information
Reddit: Join r/TheForgeRoblox for community discussions and tips
YouTube: Watch gameplay videos from experienced players for visual guidance

For more The Forge content, check out our other guides including The Forge Secret Locations Guide, The Forge Weapons Guide, and Fireite Location & Farming Guide.

Frequently Asked Questions

Why does Isaac say “Is this a joke?” when I give him a potion?

Isaac responds with “Is this a joke?” when you try to give him any potion other than Health Potion I. He specifically requires the basic Health Potion I from Stonewake’s Cross, not the more advanced Health Potion II available in the Forgotten Kingdom.

Where exactly is Isaac located in The Forge?

Isaac is located in the Forgotten Kingdom, in a camp outside the Ruined Cave. He sits under a tent on the northern side of the camp, near Captain Rowan and to the left of Henry NPC. The fastest way to reach him is to follow the trail up from Greedy Cey’s merchant stall.

How much does Health Potion I cost?

Health Potion I costs exactly $150 at Maria’s Potion Shop in Stonewake’s Cross. This is significantly cheaper than Health Potion II, which costs 350 Gold and won’t work for Isaac’s quest.

What rewards do I get for completing Isaac’s quest?

You receive a large XP bonus that helps with leveling up, plus the exclusive “Cure for Isaac” badge for your Roblox profile. The XP gain also increases your maximum stamina and stash capacity, making it valuable for character progression.

Do I need to be a certain level to access Isaac’s quest?

Yes, you need to reach Level 10 and complete all of Sensei Moro’s quests (including “End of the Beginning”) to unlock the Forgotten Kingdom, where Isaac is located. This quest is designed for early to mid-game players.

Can I complete Isaac’s quest multiple times?

No, Isaac’s quest is a one-time completion quest. Once you’ve successfully delivered the Health Potion I and received the rewards, you cannot repeat the quest for additional benefits.

What’s the fastest way to complete this quest?

The fastest method is: 1) Have $150 ready, 2) Use Portal Tool to go to Stonewake’s Cross, 3) Buy Health Potion I from Maria, 4) Portal back to Forgotten Kingdom, 5) Deliver to Isaac. The entire process takes less than 5 minutes when done efficiently.

Why should I complete this quest if the rewards seem small?

While the immediate rewards might seem modest, this quest offers one of the best XP-to-cost ratios in early game progression. The XP gain significantly helps with leveling up, which unlocks more areas, equipment, and abilities. It’s also quick, easy, and teaches important game mechanics.

Final Thoughts

The Isaac Health Potion quest in The Forge Roblox represents everything that makes a great side quest: it’s quick, rewarding, and teaches important game mechanics. While the puzzle of which potion to bring can be frustrating, the solution is elegantly simple once you understand it.

Remember, the key takeaway is that Isaac only accepts Health Potion I from Stonewake’s Cross. Don’t waste your money on the more expensive Health Potion II from the Forgotten Kingdom—it won’t work and will only result in Isaac’s famous “Is this a joke?” response.

This quest is perfect for players looking to maximize their early-game progression efficiently. The substantial XP reward for minimal investment makes it one of the best value quests in The Forge Roblox. Whether you’re a new player just reaching Level 10 or an experienced player looking to optimize your progression, completing Isaac’s quest should be a priority.