How to Play Space Pi Defense - Step by Step
The Space Pi Defense page loads a ~60 KB js13k base-defense game in an iframe. Draw lines, grow the base, buy upgrades across 13 levels. Press Play to start.
Step 1 - press Play
Press Play to inject the iframe (~60 KB). In the engine menu, choose Play Game. Upstream is SpacePi by Jack Rugile (MIT, js13k).
Step 2 - draw defense lines
Click and drag to create white defensive lines. Power limits total length until it regenerates. Enemy red lines damage the base on contact; intersecting cuts destroy them.
Step 3 - grow the base
Protect the growing green base until it reaches the target radius ring. Taking hits shrinks the base; reaching radius 2 or below fails the level.
Step 4 - coins and upgrades
Collect coins and powerups (slow enemies, unlimited power, base boost, coin scatter). Between levels, spend funds on power, base, magnet, coin, and powerup upgrades.
Step 5 - score and saves
Lower scores are better (time, lines, length, hits). Progress and upgrades stay under ftol:spacepidefense:user. Reset Game Data clears everything.
| Setting | Value | Notes |
|---|---|---|
| Download | ~60 KB | single-file Canvas game |
| Levels | 13 | unlock sequentially |
| Saves | localStorage | ftol:spacepidefense:user |
| Server calls | 0 | Client-side only |
See when to play, comparisons, and Orbital Radius Shooter.
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