- 01Read the frontier
- 02Contain or clear
- 03Advance spread
- 04Inspect protected/newly threatened cells
Spreading terrain and containment
Hazardous terrain spreads through adjacency or flow; removing sources and routes can outperform clearing cells reactively.
The player's decision
Rescue a threatened cell or build a barrier protecting a larger region?
Original scenario
Original: fictional violet moss spreads to four neighbors; stone is immune and three construction actions can protect a garden, not clear the map.
Start with this prototype
Build 8×8 terrain, one source and three building actions. Preview next-tick spread and protect a garden for five ticks. Replay the map and label the model fictional.
Change one variable
Vary spread neighborhood and test narrow barriers.
What to observe in a playtest
Use a previous-state snapshot and test barriers, edges and reset.
Take the full design card
Includes rules, scope, tuning questions and sources for further planning. It does not create a project automatically.
Original analysis · version 1
Common pitfall
New cells spreading again in the same tick makes results depend on iteration order.
Observations and sources
Cases refer to public documentation. Developers and community wikis are credited separately; document review is not a claim of hands-on testing.
- Terraria
Certain biomes convert nearby susceptible tiles; range and susceptibility matter for containment.
- Creeper World 4
Creeper is a terrain-following fluid enemy, contrasting flow with discrete neighbor spread.
Brief for the studio
Opens the AI studio with the brief below in the input. You can edit it. Nothing starts automatically.
Build 8×8 terrain, one source and three building actions. Preview next-tick spread and protect a garden for five ticks. Replay the map and label the model fictional.
Covers are original AI-generated style illustrations. Game names reference publicly visible design choices and remain the property of their owners. This atlas does not supply screenshots or assets from those games. Prompts and combinations are original drafts for new games.