1 Having to grind experience for ludicrous lengths of time in order to get your characters' levels high enough to beat the final bosses of RPGs - Final Fantasy 4-6 and Secret Of Mana, among many others
Grinding is alright as long as it is either A: Reasonably short, or B: Rewarded with awesome random encounters that really help the player along (think of the Gold Slimes from Breath of Fire)
Final Fantasy VII as well, arguably - xandermartin98
2 Purposefully Stiff and Sluggish Controls - Resident Evil, Castlevania 1, etc.
3 Equipment Weight Management - Fallout 3
4 Claptrap - Borderlands
5 Navi - The Legend of Zelda: Ocarina of Time
I may be the only one, but I don't find Navi so annoying at all.
Everyone says this is the worst, but for me, the most annoying is the low health sound, especially in ALTTP, where it plays continuously without stopping.
Hey listen! Go find someone who actually cares about you!
Oh wait... No one does.
6 Characters literally NEVER shutting their mouths during fights - Xenoblade Chronicles
7 Fetch Quests - Cave Story
8 Francis - Super Paper Mario
9 Many of Eggman's boss fights - Sonic The Hedgehog series
10 Alphys and Toriel during the phone-calling-montage segments of the game - Undertale
11 Sonic - Sonic The Hedgehog
Whoever put sonic on the annoying things in good video games list Should die
12 Overabundance of clones in the character roster - Mario Kart 8, Super Smash Bros. Melee, etc
I hate the koopalings they serve no purpose,
13 Slippy Toad - Star Fox
14 Needlessly cryptic requirements for doing extremely important things - Final Fantasy VI, Cave Story, Legend of Zelda NES, Castlevania 2, etc
15 Memes - Super Smash Bros.
16 Aran Ryan - Punch-Out Wii
17 Scout - Team Fortress 2
18 Hadouken Spamming - Street Fighter
19 Unfairly Overpowered Characters - Super Smash Bros.
20 Hades - Kid Icarus Uprising
21 The Sans and Undyne boss fights from the Genocide run - Undertale
22 How pretentious it is - Cave Story, Mother 3, Undertale, Final Fantasy VII, etc
23 Xen - Half-Life
24 Helicopters and Striders - Half-Life 2
25 Surface Tension - Half-Life