01Build the gameFree
open-source game engine
“Free open-source game engine”
- Why you'd click
- Serious indie games
- Red flags
- No built-in AI; learning curve
- Price
- $0
Opening line
(Use with an AI coder) Write a GDScript for 2D player movement.
Polished stack · 4 tools · prices checked Oct 2026
Vibe code a 2D game under $20/mo
One engine, one AI coder, one art tool, one music tool. You pay for exactly one plan — Suno Pro — so the whole stack costs $96/yr upfront ($8/mo) or $10/mo billed monthly, before tax.
The plan
Exactly what to buy.
| Tool | Job | Plan to use | Price source |
|---|---|---|---|
| Godot | Build the game | Free (open source) | godotengine.org |
| Gemini CLI | Coding help | Free with a Google account | open-source project; daily caps apply |
| Leonardo.ai | Images & art | Free plan: 150 tokens/day | leonardo.ai/pricing, Oct 13 |
| Suno | Music & sound | Pro: $96/yr upfront ($8/mo), or $10/mo monthly — 2,500 credits, 20 downloads/mo | suno.com/pricing, Oct 13 |
| Total | $96/yr upfront (= $8/mo) or $10/mo billed monthly, before tax | ||
Each price lists where it came from and when. All prices are before tax and change often — confirm before you subscribe.
Workflow
Step by step.
- Install Godot 4 and create a 2D project. Keep scope tiny: one mechanic, one level.
- Install Gemini CLI in your project folder and ask it for GDScript: player movement, collisions, a score counter. Paste, run, repeat.
- Generate sprites and backgrounds in Leonardo's free plan (150 tokens/day). Use one style preset for everything so the art matches.
- Subscribe to Suno Pro before you generate the soundtrack, so the songs carry commercial rights. Make a title theme and one loop (Pro allows 20 song downloads a month).
- Export from Godot to HTML5 and put it on itch.io to get feedback.
Limitations
What it won't do.
- Godot has no built-in AI. Gemini CLI writes the code, but you still have to read errors and wire scenes together.
- Leonardo free-tier images are public and limited to 150 tokens/day. Upgrading to Essential ($12/mo) would take the stack to $20–22/mo, which breaks the budget.
- Suno free-plan songs can't be used commercially, and upgrading later doesn't license them. Generate release music on Pro.
- Prefer no-code? Rosebud AI (Indie Dev, $15/mo) builds browser games from prompts. It replaces Godot + Gemini CLI, not the art and music tools.
The tools
Each tool, up close.
02Coding helpFree
terminal coding agent
“Free open-source terminal agent”
- Why you'd click
- Budget coders
- Red flags
- Quality varies
- Price
- $0 with these limitsfree with a Google account; daily request cap
Opening line
Write a script to rename photos by date.
03Images & artFree tier
image studio
“Image studio with fine-tuned models”
- Why you'd click
- Game/concept art
- Red flags
- Token system confusing
- Price
- $0 with these limits150 tokens/day; free images are publicUpgrade: $12/mo (Essential, ex. tax)
Opening line
Character sheet of a steampunk inventor.
04Music & soundFree tier
S
Suno
song generator
“Full songs from a prompt”
- Why you'd click
- Songs with vocals
- Red flags
- Commercial rights need paid
- Price
- $0 with these limits50 credits/day (~10 songs); no commercial useUpgrade: $10/mo, or $96/yr billed yearly (Pro)
Opening line
Upbeat indie pop song about Mondays.