A living text world inside Telegram. You control one character on a d20 tabletop-style sheet, fight on ASCII maps, trade in a real economy, join guilds, hold territory, and sail. Everything happens in chat with a bot; there is nothing to install.
Mortmain is free to play, a complete game with capped ceilings. Membership (a small monthly subscription) raises those ceilings: more levels, more spells, more of the world. Nothing on either side of that line sells you power; a skilled free player beats a paying one in a fair fight. See Membership & Store.
The world is full of quests, hidden orders, and things nobody has written down. There is no master list, you find them by playing, talking, and paying attention. Half the fun is not knowing yet what you have not found.
Read Races and Backgrounds for the two choices you cannot take back, Classes for the rest of the sheet, or The World to learn who is fighting whom.
Getting started: The World · Rules and Guidelines