Press R (for run) on your keyboard then ENTER to play!The emulator screen will blank out for a minute. Do not panic!
This is my entry for the https://www.reddit.com/r/retrobattlestations/r/retrobattlestations BASIC Month 4 contest. It has been converted to a fully interactive game with a demo/attract mode. I went a little overboard on it, but it was a labor of love. I always wanted to be an astronaut when I was growing up, and the Timex Sinclair 1000 was my first computer that I ever owned. This project was a match made in the heavens!!
When I saw FozzTexx's Apple II program, I immediately thought that it would be perfect for the Sinclair ZX-81/Timex Sinclair 1000's character graphics. The question would be if it would be fast enough to run the code well enough. Judicious use of the FAST mode (which turns off the screen) and reducing the sprite and background resolution made it work. It's still a bit sluggish with the additional game code, but it works enough to play and is quite fun. I found it to be quite addictive.