Last time I tried, I got out before I got to try, but this time I got further, my score on level 2 was... 199 then - GAME OVER (but I can still press "Run" and continue with negative amount of lives).

You have to make it the right size, danpost doesn't necessarily know the size needed. You're using a little bit of the world, so make the world the same size as the amount of space your using now.