Decided to make a list of all the games I've beaten before, because... that sounded fun!

the games being (Totaling: 217):

• Sonic the Hedgehog
• Sonic the Hedgehog 2
• Sonic the Hedgehog 3 & Knuckles
• Sonic the Hedgehog 4
• Sonic the Hedgehog CD
• Sonic Mania
• Knuckles Chaotix
• Sonic the Hedgehog (Master system)
• Sonic the Hedgehog 2 (Master system)
• Sonic Chaos
• Sonic Triple Trouble
• Sonic Blast
• Sonic Advance
• Sonic Advance 2
• Sonic Advance 3
• Sonic Rush
• Sonic Rush Adventure
• Sonic Colors (DS)
• Sonic Generations (3DS)
• Sonic Pocket Adventure
• Sonic Rivals
• Sonic Unleashed (Java J2ME)
• Sonic Jam: Sonic World
• Sonic Jam (Game.com version)
• Sonic Boom: Shattered Crystal
• Sonic 3D Blast (Saturn)
• Sonic Labyrinth
• Sonic Adventure
• Sonic Heroes
• Sonic Generations
• Sonic Colors
• Sonic Riders
• Sonic Riders: Zero Gravity
• Sonic Drift
• Sonic Drift 2
• Sonic R
• Sonic Battle
• Tails' Adventure
• Tails Skypatrol
• SRB1 (through the SRB2 remake)
• SRB2 Halloween demo
• SRB2 Christmas demo
• SRB2 demo 1, 2, 3 and 4
• SRB2 1.0.94
• SRB2 2.0
• SRB2 2.1
• SRB2 2.2
• SRB2 Kart
• Sonic the Hedgehog 3D (eduke32 fangame)
• Silver Sonic: the Crystal Islands
• The S Factor: Sonia & Silver
• Sonic Nebulous
• Sonic Triple Trouble 16-bit
• Sonic Time Twisted
• Sonic Before the Sequel
• Sonic After the Sequel
• Sonic RPG 1-10
• Final Fantasy Sonic X: 1-6
• Yakuza: Black Panther
• Shinobi
• The Cyber Shinobi
• The G.G. Shinobi
• The G.G. Shinobi 2: The Silent Fury
• Shadow Dancer: The Secret of Shinobi
• Ristar
• Kolibri
• Vectorman
• Vectorman 2
• Napple Tale: Arsia in Daydream
• Ranger-X
• Tempo
• Tempo Jr.
• Wonder Boy
• Michael Jackson's Moonwalker
• Super Castlevania 4
• Castlevania Bloodlines
• Ace Attorney: Phoenix Wright
• Ace Attorney: Phoenix Wright: Justice for all
• Ace Attorney: Phoenix Wright: Trials and Tribulations
• Ace Attorney: Apollo Justice
• Ace Attorney Investigations: Miles Edgeworth
• Ace Attorney Investigations 2: Miles Edgeworth
• Hotel Dusk: room 215
• Last window: the Secret of Cape West
• Shin Megami Tensei (neutral)
• Shin Megami Tensei 4 (law)
• Shin Megami Tensei 4: Apocalypse (law/neutral)
• Shin Megami Tensei: Digital Devil Saga
• Shin Megami Tensei: Digital Devil Saga 2
• Shin Megami Tensei: Strange Journey Redux (New neutral)
• Shin Megami Tensei: Persona 2: Innocent Sin
• Shin Megami Tensei: Persona 3 Portable
• Persona 5
• Majin Tensei
• Majin Tensei 2: Spiral Nemesis
• Tetris
• Kirby's Dreamland
• Kirby's Dreamland 3
• Kirby's Adventure
• Kirby: Nightmare in Dreamland
• Kirby Super Star
• Kirby 64: The Crystal Shards
• Kirby: Squeak Squad
• Super Smash Bros 64
• Super Smash Bros: Melee
• Super Smash Bros Crusade
• Super Smash Flash
• Super Smash Flash 2
• Super Smash Land
• Rivals of Aether
• Donkey Kong
• Mario Brothers
• Super Mario Brothers
• Super Mario Brothers 2 (USA)
• Super Mario Land
• Super Mario Land 2: Six Golden Coins
• Super Princess Peach
• Super Mario 64
• Mario Party 1
• Mario Party 2
• Mario Party 3
• WarioWare, Inc. Mega Microgame$!
• WarioWare Touched
• Toad Strikes Back 2: Toadette Strikes
• Pokemon Black
• Pokemon FireRed
• Pokemon Emerald
• Klonoa: Door to Phantomile
• Klonoa 2: Lunatea's Veil
• Klonoa: Moonlight Museum
• Klonoa Heroes
• Tail Concerto
• Jumping Flash!
• Jumping Flash! 2
• Front Mission 3
• Front Mission 4
• Armored Core
• Armored Core: Project Phantasma
• The New Zealand Story
• DOOM
• DOOM 2: Hell on Earth
• Heretic
• DOOM 64
• Quake
• Quake 2
• Quake 2: 64
• Quake 4
• Half Life
• Half Life 2
• F.E.A.R Platinum Collection
• HROT
• Chasm: the Rift
• Wrath: Aeon of Ruin
• The Citadel
• Zortch
• Twilight Town: A Cyberpunk FPS
• Return to Castle Wolfenstein
• Max Payne
• Max Payne 2: The Fall of Max Payne
• Max Payne 3
• Fallout: New Vegas
• Prey (2006)
• Serious Sam: the First Encounter
• Serious Sam: the Second Encounter
• Cave Story
• Dust - an Elysian Tail
• Mother 2
• Mother 3
• OMORI (Sunny and OMORI routes)
• Escaped Chasm
• Yume Nikki
• Oneshot
• Undertale (Pacifist, Neutral and Genocide)
• DELTARUNE
• Child of Light
• Undertale Yellow
• Minecraft
• The Coffin of Andy and Leyley
• The Testimony of Trixie Glimmer Smith
• Parsnip
• Doki Doki Literature Club
• Butterfly Affection
• VA-11 Hall-A Cyberpunk Bartender Action
• Hotline Miami
• Hotline Miami 2: Wrong Number
• Katana ZERO
• Spark the electric jester
• Touhou: Luna Nights
• Cult of The Lamb
• Contra
• Ghost Rider (PS2)
• Crash Nitro Kart
• Crash Team Racing
• Super Animal Royal
• Counter Strike: Source
• Call of Duty: Black Ops 2
• Battlefield 4
• Battlefield Hardline
• Grand Theft Auto: Vice City
• Grand Theft Auto: San Andreas
• Grand Theft Auto 5
• Driver: San Francisco
• Mega Man (Game Gear)
• Ninja Gaiden (Master System)
• Ninja Gaiden (Game Gear)
• Ninja Gaiden Shadow
• Ninja Gaiden 3 (PS3)
• Need for Speed: Most Wanted
• Need for Speed: Carbon
• Blur (PS3)
• Sleeping Dogs
• Assassin's Creed: Brotherhood
• Warlords: Call to Arms
• Warlords Heroes
• Warlords 2: Rise of Demons
• Strike Force Heroes
• Strike Force Heroes 2