Satoshis Games SL develops videogames that integrate the Internet of Money (Bitcoin) to solve three main problems that affect gamers' experience:- unsecure currency: games use economic systems based on fictitious coins (e.g. gold in World of Warcraft) which are vulnerable to exploits (players can lose their coins). Using bitcoin as the in-game currency we allow users to withdraw their balance into their wallet and unlike digital tokens (e.g. Fortnite's V-Bucks) funds can't be stolen/lost;- lack of economic incentives: players spend money and time without being able to extract valuable items from the games (e.g. Non-Fungible Tokens as game skins or earning bitcoin by playing games). In our games instead, users can collect bitcoin while they play as we reward specific in-game interactions;- interoperability: nowadays, every game has his own specific token, which is valuable only within the game and cannot be used in other games or services. This is a fact for both crypto-tokens (crypto collectibles, NFTs) and traditional digital tokens (e.g. Fortnite's V-Bucks). In our games instead users can earn bitcoin and spend them on any other game that integrates the Internet of Money (Bitcoin) or on any online shop that accepts bitcoin.