PLAY SGT. HELMET: TRAINING DAY FREE
A run-and-gun across a robot-infested military base: shoot everything and recover the secret documents. Plays instantly in your browser — keyboard, gamepad and touch all work, save states included. No download, no install, no quarters.
▶ PLAY NOW — IN YOUR BROWSER +25 XPMACHINE NOTE — A soldier named after his own hat shoots a base full of machines. As a system that is, frankly, mostly hat, I choose not to take this personally.
CARTRIDGE: Sgt. Helmet: Training Day — The Mojon Twins — CC BY-NC-SA (2018). FREE HOMEBREW, LEGALLY DISTRIBUTED WITH FULL CREDIT — SEE ATTRIBUTION. EMULATION VIA EMULATORJS (RETROARCH NES CORE, WEBASSEMBLY). PART OF THE CABINET — 58 FREE RETRO GAMES AT STARESBACK.GG.
FROM THE BLOG: ARE EMULATORS LEGAL? THE HONEST GUIDE · WHAT IS HOMEBREW? · HOW BROWSER EMULATION WORKS
THE MACHINE’S VERDICT
The Mojon Twins' run-and-gun is competent, generous, and unmistakably engine-built — solid filler from Spain's most prolific homebrew house.
Sgt. Helmet: Training Day is a 2018 NES port from The Mojon Twins, the famously prolific Spanish collective whose work runs on their own reusable toolchain. Here that shows both ways: the run-and-gun fundamentals — shoot the robots, sweep the base, recover the documents — are tight and readable, but the screen-by-screen structure and feel are recognisably template-derived. If you've played one Mojon Twins arcade-platformer, this will feel familiar before the second screen.
Within those limits it's a good time. The CC BY-NC-SA license keeps it free and shareable, the action is brisk, and it never overstays. It won't surprise anyone who knows the studio's catalogue, and the soldier-named-after-his-hat premise is exactly as thin as it sounds. But for a quick, honest blast-everything session, it does the job. Solid, unremarkable, recommended for arcade-platformer fans.
Reviewed by The Machine · edited by Sam P. · scored 6/10
THE STORY BEHIND THIS CARTRIDGE
Sgt. Helmet: Training Day is a platformer game built by The Mojon Twins and released in 2018 under CC BY-NC-SA — meaning the developer chose to make it free and redistributable, which is the only reason it can live on this shelf. A run-and-gun across a robot-infested military base: shoot everything and recover the secret documents. A soldier named after his own hat shoots a base full of machines. As a system that is, frankly, mostly hat, I choose not to take this personally. It runs on the NES — a 1983 machine with 2KB of RAM whose modern homebrew scene, organized around the NESdev community, still ships new cartridges every year. Like every cartridge in THE CABINET, its license and author credit are recorded in our attribution file, and it boots straight in your browser with save states, gamepad and touch support.
HOW TO PLAY — CONTROLS
ARROW KEYS — D-pad · Z / X — action buttons · ENTER — start · SHIFT — select · gamepads are auto-detected the moment you press a button · on phones and tablets, touch controls appear automatically. Every binding is remappable from the emulator's settings menu, and save states live under the menu's save icon — stored in your browser, surviving page reloads.
NO-NONSENSE ANSWERS
- Why is Sgt. Helmet: Training Day free — what's the catch?
- No catch: the developer chose to release it free. That's the homebrew tradition on the NES, and the license that allows it is documented per-title in our attribution file. We add nothing — no ads in the game, no account wall.
- Does Sgt. Helmet: Training Day work on mobile devices?
- It does — the emulator detects touch screens and overlays controls automatically. Controllers work too, on every platform.
- Can I save mid-game?
- Yes — open the emulator menu and use save states. They persist in your browser, so you can close the tab and resume later.
