Void Surge

You're the only survivor on the extract pad at Station Helix-9, holding out until the shuttle leaves. Every weapon you carry aims and fires by itself. The Light Saber is always your core weapon, with room for three arms and three mods, and every piece ranks up to Mk 5.

Intensity 1 to 10, one step each minute. Final-minute spawn rate, doubling every ten seconds. Ten arm weapons, including plasma shotgun, laser beam, fire trail, energy orbs, combat drone, sentry turret, Tesla coil, radiation cloud, orbital strike and cryo grenade. Four bosses at 2:00, 4:00, 6:00 and 8:00. Gold pickup from each dead boss, pulling every gem on the map. Score from kills alone, 8 points at intensity 1 and 140 at intensity 10.

Steer with WASD or arrow keys, or drag anywhere on a phone or tablet. Kills drop XP gems. Level-ups stop the clock while you pick from three cards. Walk over medkits to patch your hull. Bosses stay when the next arrives, so falling behind means fighting several at once. Survive to 10:00 to mark the run extracted on a browser-saved scoreboard.