Build an empire in the palm of your hand.
XXI Online Games is an indie studio building deep, cinematic mobile games and apps. Single-player. No forced ads. No ad tracking. Just experiences worth your time, on Google Play and the web.
Our latest premiere
A deep business and stock market simulator where every decision moves the market. Build companies, trade stocks, outsmart living AI rivals, and write your founder legacy.
MOGUL — Empire Tycoon
A single-player offline business simulator with a living economy: companies across 10 industries, 13 stocks and 22 commodities on a live market, AI rival CEOs, IPOs, hostile M&A, and macro cycles that reward the smart money. No forced ads, no tracking - just you and the market.
- Living market economy
- Companies across 10 industries
- Stocks, commodities & margin
- Plays fully offline
- Living AI rivals & M&A
- Privacy-first by design
Games & apps
From deep simulations to story-driven experiences - explore what we've built and what's coming next.
MOGUL — Empire Tycoon
Build a business empire from one company to billions. Trade stocks & commodities on a live market, outsmart AI rivals. Single-player, offline.
Spotlight Dreams
Build a star from the ground up. Branching scenes, careers, romance, money. Single-player, offline.
Downfall Survival Sim
Command the last bunker in a post-apocalyptic wasteland. Manage survivors, scavenge for scrap, defend against mutant raids. Single-player, offline.
premiere
Untitled #3
Our next mobile experience is in production. Sign up below to be the first to play.
An indie team obsessed with deep mobile play.
XXI Online Games is a small, independent studio. We design and ship story-driven games and apps for Google Play and the web - the kind of titles you actually finish, not the kind you uninstall after a week.
Every game we ship is single-player, offline-first, and privacy-friendly by default. No dark patterns, no pay-to-win, no advertising IDs — and where we measure anything at all, it's anonymous and you opt in. Just craft.
Built for the way you actually play.
Single-player & offline
Plays anywhere - on a plane, in the metro, off-grid. Your save lives on your device.
Privacy by default
No ads, no advertising IDs, no tracking across other apps, and nothing used to target ads at you. Anonymous analytics only where you opt in — and your saves always stay on your device.
Cinematic craft
Hand-crafted systems, living economies, and a soundtrack worthy of headphones.
Pure mobile design
Every UI is built for thumbs first - one-handed, smooth, premium. No clutter, no busywork.
Pitch us, partner, or just say hi.
Press, publishers, players, and curious humans welcome. We answer every email.