Holding Right and Up (which I will now refer to as A and B), the engine receives input turns like this:
ABBABABA...
(image from Vertebrae)
It's a minor annoyance in many games (and should be fixed solely for that) but a very concrete example of a game that relies on inputs alternating and not doubling up is Hebird (link to a fork but my testing was done solely on vanilla)
Not a real case but holding ABCD makes for ABCDBCDABCD...
Holding Right and Up (which I will now refer to as A and B), the engine receives input turns like this:
ABBABABA...
It's a minor annoyance in many games (and should be fixed solely for that) but a very concrete example of a game that relies on inputs alternating and not doubling up is Hebird (link to a fork but my testing was done solely on vanilla)
Not a real case but holding ABCD makes for ABCDBCDABCD...