We'll keep working on the RAM needs, but yeah, that is just about the lower limit that I would expect to be able to play the game at all currently. We have a lot of work to do, but don't worry, we'll get it running on older and older hardware as we optimize. Thanks for your patience (and your students').

I've started a GitHub issue to track that coordinate selector bug: https://github.com/codecombat/codecombat/issues/1038 – appreciate the bug report!

Interestingly, we have a 10-year-old who hangs out in our dev chat and helps us playtest and simulate. He actually came up with a strategy that did pretty well on the ladders for this latest one, and we'd challenge our other (existing developer) playtesters to c'mon, surely you can beat the 10-year-old!

Looking to the future, we have some ideas to push that younger and younger, too.