Chain Reactor

 Survive ten minutes. Start a chain reaction.

Chain Reactor is a neon survivors-like where every kill can set off the next one. Pick up Volatile Core, wade into a swarm, and watch a single explosion cascade across the entire screen.

THE HOOK

- Chain reactions.  Slain enemies explode, and those explosions kill more enemies. Dense packs go critical.

- The chain counter.  Every kill within 2.6 seconds extends your chain and boosts XP. Get hit and it breaks.

- Overload.  Hit a ×100, ×250 or ×550 chain to detonate a screen-wide blast.

- Daily Run.  Same seed for everyone, every day, with an online leaderboard.

WHAT'S INSIDE

- 4 sectors, each with its own hazard, enemies, music and final boss: Reactor Core, Cryo Vault, Overgrowth and Void Rift

- 18 weapons and 18 evolutions

- 24 upgrades

- 18 ships, 13 of them secret, unlocked through hidden achievements

- 30 achievements

- Run modifiers for bonus shards, Endless mode, and permanent upgrades between runs

CONTROLS

- Move: WASD / arrow keys / left stick / drag on the left half of the screen

- Dash: Space / A button / tap the right half of the screen

- Pause: Esc / Start

- Pick upgrades: 1–4, arrow keys + Enter, D-pad + A, or click

ACCESSIBILITY

- ⚠ Photosensitivity warning:  contains flashing lights and rapid visual effects. A one-click Reduce Flashing mode is offered on first launch.

- Sliders for screen shake and effects intensity, plus a damage numbers toggle.

- Enemy bullets are drawn above every effect with a dark outline, so they stay readable.

TIPS

- Volatile Core is always offered on your first level-up. Take it.

- Getting hit breaks your chain, so dashing is worth more than it looks.

- Check the Armory to see what every weapon evolves into.

v0.1: first public release. Feedback and bug reports in the comments are very welcome!*