They can be Bad or Mediocore. It can be mentioned also Good games (if they really mess it up in some parts).
But they are mostly flawed for design. (It could be anything)
It can be learned by playing it and look the details why it doesn't work.
I'm targeting mostly the developers/indie, if someone want to make their own game.
Don't do the same mistake like they are:
Showing 1-10 of 54 items
Level Design Enemies placement Unfair Bosses Unfairly Difficult (no "easy" mode for casual) Escape button is Suicide
ALPHA/BETA 3D game Controls Level Camera
Music Sound Movement is too slow Enemies too fast Player collision are too much off the chart and precise (1 pixel touch to an enemy and you are dead) Escape button is Suicide (all your lifes are now gone) No Save options (when you die, you have to start all over again)
For kids! Unresponsive controls No logic (falling down in water like a stone)
Wast world - Not much interactions Collectibles are hidden (feathers) - Needs to have Navigation tool (lead, flow) Repetitive Backtracking tedious - (Example like: No portals) Controls
Pole Timer simulator Unskippable cutscenes/introduction
Combat -- Only works shooting Bosses
Seizure (Rainbow colors and also spinning the whole screen)
Or called: Sonic 2006 Loading screen... Glitches - They can be fun, but it needs to have a good reason like this game (Goat simulator) Rushed, Unfinished
Automatic running Short levels and can't go back Enemies can't even attack you You can play with 1 hand and beat the whole game by using only Speed Boost