A vertical arcade shooter in 1990s Japanese style. Hold the lock key to web up to six targets, release to fire a homing volley, and fly three timed sectors into an air fortress.
IRON ECHO is a vertical-scrolling arcade shooter — a shmup — flown over a harbour, through a defence line and into an airborne fortress. It is deliberately built in the style of the Japanese arcade shooters of the 1990s, and its author says so: the whole thing started from one lazy prompt asking GPT-6 Astra for a game in the style of Soukyugurentai, the 1996 Raizing shooter whose signature was a lock-on weapon.
That lock-on is the mechanic here too, and it is what makes the game more than a bullet sponge. Holding the lock key sweeps a targeting web across the screen and marks up to six enemies; releasing it fires a homing volley at everything you caught. Locking slows you down while you do it, so every volley is a decision about how much of the screen you can afford to stop moving in.
The interface is in Japanese, but the controls are drawn as key glyphs down the right-hand side and the mission structure is numbered, so it is playable without reading a word of it.
How to play Iron Echo
- Choose one of three aircraft — balanced, fast-locking or heavy — then press Enter to launch. Left and right change the selection.
- WASD or the arrow keys move. On a touch screen you drag the ship instead, and the lock and bomb controls appear as buttons below the play area.
- Z fires the normal shot, and there is an auto-shot toggle if you would rather not hold it.
- Hold X to sweep the targeting web over enemies — up to six locks — then release to send the homing lasers. This is the whole game; learn it first.
- Space drops an emergency bomb and clears the bullets around you. You get three. P or Esc pauses.
- Your hitbox is the small white dot in the middle of the ship, not the whole aircraft. Bullets that look like they hit the wings do not.
Click Fullscreen above the game for the largest play area. If the game does not load, use Open in new tab to play it directly from our copy.
Why it's worth your time
The three sectors are timed rather than endless — the mission list shows them starting at 0:00, 0:32 and 1:36 — so a run has a shape and an end instead of scrolling until you die. There is a standard flight mode and an assist mode for a gentler ride.
It is the heaviest single game in the collection: our copy runs to about 18 MB, nearly all of it the soundtrack and the painted backdrops. Headphones are, as the game itself suggests, worth it.
The author's point in posting it was how little effort it took — a rough prompt and a few exchanges — and the result is a shooter with a scoring chain, a lock bonus multiplier, three selectable aircraft and a hit-box convention lifted straight from the arcade games it is imitating.
How it was made and where it lives
Published through ChatGPT Sites (chatgpt.site) — the same hosting pipeline GPT-6 Astra uses to ship playable games straight from a prompt. The author publishes as sssscryptoman. Original: https://scarlet-vector-0905.sssscryptoman.chatgpt.site/. The Play button above runs our own unmodified copy, so the game keeps working here if that page goes down — which on free hosting usually has nothing to do with the author. Nothing about the game itself is changed, and the original stays linked from every page.
ChatGPT Sites is the hosting side of the workflow OpenAI describes for building games with GPT-6 Astra: the model writes the game, then publishes it to a public address in one step. That is why so many of the newest single-file browser games are appearing on chatgpt.site domains.
The post that led us here
SSSS.CRYPTOMAN@SSSS_CRYPTOMANA game, finished in no time at all with GPT-6 Astra.
From one lazy prompt — make me a shooting game in the style of Soukyugurentai — a few exchanges produced something with the quality of a game you can actually play.
The trailer, of course, was made entirely by AI as well.
Play it free here.
If you like Iron Echo, try these
For the other shooters here, Doodle Shooter is first-person and drawn in biro, and DUST II · Desert Ops is a map to fly around rather than a game to win. For another arcade run with a scoring chain, try Magic Carpet Wizard.
Frequently asked questions
- Do I need to read Japanese?
- No. The interface is in Japanese, but the controls are shown as key symbols and the missions are numbered. Nothing you need to press is hidden behind the text.
- What is the lock-on for?
- Hold the lock key to mark up to six enemies, release to fire homing lasers at all of them at once. It scores a bonus multiplier and is the intended way to play.
- Can I play it on a phone?
- Yes. On a touch screen you drag the ship to fly and the lock and bomb controls appear as buttons under the play area.
- Why is it so large?
- The soundtrack and the painted stage art. It is about 18 MB, the biggest single game here.
- Is Iron Echo free to play?
- Yes. Everything on Floating Arcade is free, with no account, ads or downloads.
- Can I embed this game on my own website?
- Yes — copy the snippet below. The embedded player links back here, which is how we ask to be credited.
Embed Iron Echo on your site
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