Heatblast and Diamondhead New Adventure

Ben 10's fiery and crystal-clad heroes team up for a platforming run that'll test your timing more than your trigger finger.

I wasn't expecting much from another Ben 10 fan platformer, but Heatblast and Diamondhead New Adventure actually nails the hero-swap hook. You control both aliens across a series of side-scrolling stages, swapping between fire and crystal on the fly. Heatblast's fireballs arc and leave little burn trails on the ground; Diamondhead smashes through blocks and can take hits that would crisp the other guy. The visual contrast is the best part — molten orange against jagged blue, like two different games stitched together. The levels don't hold your hand. Early on you'll coast through simple jumps, but by the third stage the screen starts throwing lava pits, moving platforms, and swarms of drones that punish you for staying as one alien too long. That's where the mouse and keyboard setup shines: left hand works movement and swap keys, right hand aims Heatblast's shots or clicks Diamondhead's crystal shard attacks. I found myself swapping mid-jump just to break a block with a crystal spike before landing back on a fire trail. It's that kind of micro-decision loop. It's not a long game — you can finish the adventure in one sitting — but the difficulty spikes keep you honest. Some enemies only take damage from one hero, so you have to read each room before charging in. And unlike a lot of free browser titles, the hitboxes feel generous without being sloppy. If you like Ben 10 or just want a quick platformer that respects your time, this one's worth a run.

Use Mouse To Play and Keyboard

Switch to Heatblast for ranged enemies — his fireballs have better reach than Diamondhead's short crystal shards. Keep Diamondhead on the ground for tight platforming; his extra durability lets you survive mistakes Heatblast can't. Use the mouse to aim carefully when lobbing fire — arcs matter, and you can hit enemies behind low cover. Swap heroes mid-air to break blocks with crystal spikes before you land, it saves a ton of backtracking. Learn enemy patterns before swapping — some drones only take damage from one alien, so don't waste attacks. Play on a desktop browser with a keyboard; touch controls feel cramped for the precise jumps this game demands.

Q: Is Heatblast and Diamondhead New Adventure free? A: Yes, it runs directly in your browser and doesn't require any payment or account. Q: Can I play Heatblast and Diamondhead New Adventure on a phone or tablet? A: It works on mobile browsers, but the platforming is much easier with a physical keyboard and mouse. Q: Do I need to download or install anything to play? A: No, just open the game page and it loads as HTML5 — no downloads, no plugins. Q: How do I switch between Heatblast and Diamondhead? A: Use the number keys or on-screen swap button; check the in-game instructions for the exact key binding. Q: Is Heatblast and Diamondhead New Adventure suitable for younger kids? A: Absolutely, there's no blood or harsh violence — just cartoon-style alien combat and jumping puzzles. Q: Does the game save my progress automatically? A: Usually your level progress stays in the browser cache, but clearing site data may reset your place.