Play Treasure Mountain! online — the original 1990 DOS game Works — the full original game runs via DOSBox in your browser
Guide updated October 2026 · Runs via DOSBox + WebAssembly
Treasure Mountain! — a 1990 Super Solvers adventure from The Learning Company. Morty Maxwell, the Master of Mischief, has hidden the treasure of Treasure Mountain. You climb its levels catching elves with a net, answering their reading and maths clues, and opening treasure chests until you reach the castle at the top. Press Enter at the title to begin.
1–5: menu choices · Y / N: answer · ENTER: confirm · SPACE: continue
⌨ Keyboard — for menus & name entry
Controls — what does what
| Action | Keyboard |
|---|---|
| Walk | Arrow keys |
| Jump / climb | Up arrow |
| Throw net | Space |
| Confirm / answer | Enter |
| Menu | Esc |
Runs in your browser tab with DOSBox + WebAssembly — nothing is uploaded. Click the screen to capture input; press Ctrl+F10 to release mouse.
Treasure Mountain! is no longer sold anywhere, and its publisher is gone or has left it unsold for decades. It is hosted here on the same footing as the Internet Archive's software collections. That is a practical position, not a legal claim. This page carries no advertising. Provenance: /apps/treasure-mountain/NOTICE.md. Rights holders: it comes down within 48 hours on request.
About Treasure Mountain!
The Super Solvers series turned school skills into side-on adventures, and Treasure Mountain! is the one many people remember from primary school. The elves' riddles cover reading, simple maths and logic for ages five to nine. Each chest needs the right key, and each key comes from a clue the elves give you when caught. Three levels of mountain lead up to the castle.
How it runs here
This is the original DOS release of Treasure Mountain!, unmodified, running in DOSBox compiled to WebAssembly. The whole game is about 1 MB, so it starts within seconds on a normal connection. Sound and music play once you click into the game.
Frequently asked questions
Can I play Treasure Mountain! online for free?
Yes. Click Play and the original 1990 DOS version starts in your browser, running in a WebAssembly build of DOSBox. Nothing to install and no account.
Why is Treasure Mountain! hosted here?
Treasure Mountain! is not sold anywhere today; we checked the stores listed in its provenance note. It is preserved here the way the Internet Archive preserves old software. That is a practical position, not a legal claim. If the rights holder (the successors to The Learning Company (HarperCollins)) asks, it comes down within 48 hours.
Does my progress save?
Saved games persist in this browser between visits, best-effort. Clearing site data removes them.
Can I play on a phone or tablet?
Yes. Touch buttons for the keys Treasure Mountain! uses appear under the game on touch devices.
More you can play in your browser
Related guides
- Reader RabbitPlay the original Reader Rabbit in your browser: The Learning Company's 1989 DOS reading g
- Number MunchersPlay Number Munchers in your browser: the 1990 MECC classroom game where you munch multipl
- New Math Blaster PlusPlay New Math Blaster Plus in your browser: Davidson's 1990 DOS maths game with Blasternau
- Run your own DOS gameHave another DOS game on disk? Drop it into the DOS player.
Want a game like this on your own site?
Treasure Mountain! isn't ours to give away — we host it, we didn't write it. But eleven of the games here we did write from scratch, and those are free for anyone to put on their own page: one line of HTML, no account, no permission, no attribution beyond a credit line.