#20 - BL4CK_ICE

Part of the RARO30 challenge: 30 small experimental games in 30 days

bbbbbbbbbbbbbA hostile intrusion has been detected. Your only weapon: a stack of classified nodes.

BL4CK_ICE is a combat Mahjong game where every matched pair is an action in a real-time battle against increasingly dangerous hackers. No turns. No downtime. The clock is ticking and the threat level is rising.

THREE WEAPONS. ONE BOARD.

Pick your pairs wisely. Each tile type triggers a different combat action:

🔴 BREACH — Attack the intruder. Exploit, Inject, Overflow, Trojan. 🔵 FIREWALL — Raise an ICE shield. Blocks the next incoming hit. 🟢 PATCH — Restore system integrity. Keep yourself alive.

THE RULES ARE SIMPLE. THE PRESSURE ISN'T.

Standard Mahjong Solitaire rules: match pairs of exposed tiles — not covered from above, at least one side open. Clear nodes to access deeper layers of the stack.

But there's a hacker hitting your system every few seconds. And the longer you take, the harder they hit. Chain consecutive same-type matches for combo damage. Balance offense, defense, and healing. Survive wave after wave.

FEATURES

• Classic Mahjong Solitaire with a real-time combat twist
• Procedurally generated solvable boards — every layout has a path
• Escalating wave system with named hackers
• Threat level scales with total uptime — no safe grinding
• Combo system rewards strategic matching
• CRT terminal aesthetic with matrix rain, glitch FX, and procedural audio
• Single HTML file. No dependencies. No installs. Runs anywhere.
• Keyboard and touch support