BLASTEROID

🕹️ Computer: ↑ thrusts along the direction the ship is facing, ←/→ turn, ↓ does a U-turn, spacebar fires (hold it).

📱 Mobile: two faint circles at the bottom corners — left steers (aim toward your thumb), right throttles the engine (the further from center, the stronger the push). No fire button: the cannon fires automatically the whole time.

🎯 Directional fire, always toward the front of the ship — no manual aiming.

👾 Every 3rd level is a boss fight against a massive alien warship instead of the usual asteroid wave — watch its health bar and dodge its spread/aimed shots.

💎 Small asteroids always drop an XP crystal: collect enough to level up and pick 1 of 3 random upgrade cards (weapon tiers, orbital shredder drones, a portable black hole, a super magnet, shield...). Every card type caps at level 3.

🛡️ The Shield card is what keeps you alive: each hit consumes one shield level (plus your most recently acquired upgrade, on top) and grants a 2s invulnerability window. Get hit with zero shield left and it's game over on the spot — no shield, no second chances.

🔥 Combo: chain kills to raise your score multiplier — missing an entire volley or getting hit resets it to x1.

🔫 Continuous laser and bombs are secondary weapons: once unlocked via a card, they fire alongside your cannon under the same conditions (spacebar / finger down).

💣 Some levels also hide mines inside asteroids: don't touch them (you can destroy them from a distance with gunfire, or with a bomb blast).

👽 After 1 minute of cumulative playtime, an alien ship attacks — then another one every additional minute. The countdown is shown at the top of the HUD.

🌀 Portals occasionally appear: fly through one to spawn a synced clone that mirrors or shadows your movement and fires alongside you.

🕳️ Once unlocked, trigger the portable black hole with E (or the dedicated button) to suck in and detonate everything nearby.

⏱️ The longer you survive, the faster and tougher the asteroids get.

🚀 At certain score milestones, pick your ship's next evolution between 2 candidates — each is a real build choice (speed, turn rate, fire rate, bullet speed, hitbox size all differ), not just a new look, and it's permanent for the run.

🌌 Leaving the screen makes you reappear on the opposite side.