Back in 8-bit days I didn't have access to the Turbo Basic XL, but was reading about it. I was really excited about the new features (speed, graphics commands, control structures) and at the same time miserable that I can't use it. The local computer shop offered a lot of Polish Atari games (they were great [1]), but not so much tools.
Anyway, once I bought a new game "Kolony", stored on a cartridge. It was a multiplayer game, asking about the number of players before start. Accidentally, I pressed CTRL+3, which caused some error and I got the BASIC prompt. It turned out that the whole game was written in Turbo Basic XL and the cartridge included the interpreter as well. I just have to type NEW to erase the game code itself and start programming in the new BASIC flavour.
Anyway, once I bought a new game "Kolony", stored on a cartridge. It was a multiplayer game, asking about the number of players before start. Accidentally, I pressed CTRL+3, which caused some error and I got the BASIC prompt. It turned out that the whole game was written in Turbo Basic XL and the cartridge included the interpreter as well. I just have to type NEW to erase the game code itself and start programming in the new BASIC flavour.
[1] http://www.atarimania.com/list_games_atari-400-800-xl-xe-lk-...