Z-Rox
I like this idea and luckily it works well. Z-Rox is a 1D game. Yep, less than 8bit and with none of your fancy 3d graphics here, you simply have to identify the symbol from a ’1D’ view of it. The first one was hard then I rattled through the next pile until we hit symbols which threw me for a bit as did the move to using words as the answers but the learning ramp is pretty good. It’s addictive enough to keep me playing for ‘just one more level’.

I got to level 35 before having utter brain failure.
I subsequently found a walkthrough which lets you peek at one answer at a time if you really want it but I’d advise not looking until you REALLY have to.