Coins: collectible dropped in clusters (lines/arcs) above platforms; collected on overlap, banked into a persistent wallet at game over, shown in HUD and on the GameOver screen. Magnet power-up pulls nearby coins toward the player for 6s (HUD duration bar). Gas Limit shield power-up grants a cyan aura that absorbs one enemy hit instead of dying, then breaks. New procedural textures (coin/magnet/shield), spawn weights, durations, sound, and stats (coins collected, GWEI wallet) wired through ScoreManager/StatsManager/Settings. Verified via in-browser sim: coins spawn, magnet pull 100px to 10px, collect increments GWEI, shield absorbs a hit (no game over) while no shield = death.
AnRil
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