Smash Karts

Grab a weapon crate, ram it open, and start blasting rivals before they blast you - that's Smash Karts in the first ten seconds. You're behind the wheel of a battle-equipped kart, dropped into a 3D arena full of players from around the world, and the only plan that matters is outlast everyone else.

The map is scattered with surprise boxes holding weapons and power-ups, so half the fun is deciding whether to detour for loot or just gun it straight at your nearest target. Rockets, traps, whatever you scoop up - use it fast, because everyone else is scooping too.

It runs right in your browser, free, no download, so you can be mid-explosion within seconds of clicking play. If you like your multiplayer chaos with a bit more room to move, Bloxd.io is worth a lap too, and .io Games has plenty more of this same fast, free energy.

Eliminate as many opponents as you can while keeping your own kart in one piece - last kart standing wins the round.

Drive around the arena collecting surprise boxes as you go; each one hands you a random weapon or power-up. Use what you get right away rather than hoarding it, since items are your only real edge in a fight.

Stay mobile. Sitting still makes you an easy target, and the arena rewards players who keep circling for boxes while staying alert to who's aiming at them.