Well sometimes games are so bad and that is what makes them so good. I cant really think of any specific ones right now but one game that kinda shows what I mean is Goat Simulator. That game though was kinda made with that in mind so its not the best example but still. Glitches can be quite funny sometimes and can make a game fun.
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̴̢̩̲̝̟͚̥͕͈̺̼͇̇̂ͣͩͮͥ͐́͜͟C̶͙͙̳̰ͤ̇̐̄̌͐͘͢ͅ-̬̭̺͇̮͓̜̦͙͖̟͕̫̬̜͎̜̦ͥ̒̌͒͂̈́͊ͣͯ͑̉̎ͧ̿͂͞͞L̷̛̞̠̦͍͉̤̼̙̻̘̞̘͖̜̲̓͆̏̏̇͐ͬ͐̑ͪ͗͜͞o͎̮̩̲̺͇̹̲̬̙̼͕̟̻̱ͮ̓͆̿̐̊̀͋ͭͣͪ̋ͤ̉̉̐͑̀͞ͅo̢̡̞̪̤͖̦̱̫̞̼̞̒̀̐̎̕͟͝k̓ͫ͊̅ͪ͛̎͌͛̚̚͟͏̨̛̤̙͔̲̗̬̗̤̪̠͔̟̥͓͚̟̜͖͜ͅ-̶͂̿ͯ̚̚̕͘҉̫͈̮̘͓̘̘Ą̩̲̬̰͍̬̫̱͙̼̤̣͎̭̓ͨ̉͊ͫ̽́ͬ̌̾̊̈̔͗̿̚̕ͅt̓ͩͣ̌ͧͥ̽͂ͪ̏̑͊҉͏̣͔̱͙̥͎̠̺̗͎̖̭͍̖͘-̡̧̬͕̯͖̼̹̙̠̦͉̝̳̖͓͈͚̾̊̑̓͂̍̅͗ͤͮ̑͘͝ͅM̷̡̥̮̗̲̩̰͍͔͈̜͂͗ͫ̀̎̍ͯ́̎̅ͮ̿̔͐̿ͯ̃̀̚̚͢ͅy̍ͩ̿̓̑ͫ̉̂͛ͨͬ̚͏̶͎͈̪̫͓̞̙̖̯͖͖͔͉ͅ-̂̑̾́̓̌̿̎̍͗͛̈́̃ͩ̓̀́̚̚͏͇͎̱̜̲͉P̶̡̲̤͕̖͓̯̯̜͒̃̌ͫ́ͭ͘͞į̦͓̟̪͍̰̳̼̫̤̀̄ͦ̂̅̓̀ͥ̈́̑͜c̢̡̨̛̝̱̗͚̠̲̱͓̦̘͚̞̹̥̭̞͙̎͗͊ͫͩ͗̒ͬ͋̀ͦͬ͌̌͗́ͩ̂ ̨̨͙̗̜̪̠̲̌͑̓̉͘͞͞W̴̸̴̠̘͖͍̞̘̯͈͚̗̣̭̮̺̞͚͙̅̈ͯͮ́͢ͅͅả̸̞͍͔̩̪̻̹͕̦͕̠̅́͒ͤ̈ͣͬ̾̈̆ͪ͛̿̍ͫ͑̈́̚s͖̫͖͎̾ͥ̓͐ͨ͐̒ͬͫ͋ͥͪͯ̆͋̅̀̕͝͝ ̵̡̰̻̠̗̙̬̥̠͙̙̹̝̼̠̖͐̓̂̅̽ͭ͢͜ͅH̨̰̞͙͙̟̥ͤͫ̈́ͣͥͧͤͯ̌ͦ̍͘ȩ̣̗͔̺͈͓̮͒͛͌͛́ͥ̾̊͐̐̃͋͘͜͞ͅr̫̱̙͒͌̓͐ͯͨ̿̑ͩͧͧ͘͟͜͠ͅe̗̼͕̼̺͎̤͙̻̔̾̑͑̓ͭ̀͑̑̈͌̉́
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yeah, I agree... the game I talked about -Womb Room- is one of them... I'm pretty sure the bugs aren't intentional though.