For most games you don't have to actually play them much in order to get 3 different scores quickly and move on. For example, with Bounchy I would make sure I score like 9 and 7 and 2 or something.
These ones are super quick to get 3 sent scores and move on: Addow Ride Biala Tetris Blackjack Bounchy Candy Cannon Dagger Throw Domino (literally just hold space bar - it is likely three different scores every time) Dukka Trove Fropa Attack Gumball Machine Madness Leido Bounce Moon Raccoons Murfin Chase Newth Snowboarding Oglue Lunch Pearl Skipping Protect the Egg (lose the egg - gets you ten points when you get it back each time) Rofling Gold Rofling Stamper Shoot the Fatty Simon Ushunda Invaders
These ones take slightly longer as you have to play them a bit or let them time out: Baterminator Candy Cannon (just actively miss 5 times after you get a certain amount). Fruit Harvest Hexxagon Item Collector Marapet Keeper Muffin Bricks Newth Box (quite easy to miss the newth) Phanty Quest Sindi slide (I just start the game then ignore it) Whack an Azul (hit it three times, then two, then 1)
If you don't mind actually needing to play the games then these are okay: Klondike Mahjong Spider Solitaire (1 suit) Undead Billiards
You have to let the card ones time out if you get stuck though. For Mahjong, just hit hint fifty million times and it times out quickly.
That should help a bit, I hope. It's easily possible to submit 100 scores within a day if you're dedicated.
9th Birthday Male Costume is now Birthday Cake Dress Arinya Male Costume is now Arinya Mask Morbid Suit is now Skeleton Leggings Male Poison Costume is now Waist Cincher Male Mafia Costume is now Mafia Hat Sindi Male Party Suit is now Sindi Party Tank Top Male Star Pyjamas is now Dreamland Bunny Male Summer Swimwear is now Surfboard Autumn Suit is now Hoodie Scarf Feather Male Costume is now Feather Tunic Blitzen Skin is now Viotto Sniffles Carnival Feliz Male Costume is now Starry Feliz Costume Chick Male Costume is now Osafo Mask Bunny Male Costume is now Valentine Sindi Mask Lorius Onesie Male Costume is now Sindi Party Shorts Valkyrie Male Costume is now Valkyrie Wings Burlesque Male Costume is now Burlesque Suspenders Male Bunny Feet is now Sindi Feet Sunflower Suit is now Sunflower Vines Cupid Male Costume is now Cupid Sword Belt Yellow Shirt is now Furvana Shirt Red Shirt is now Zoundgarden Shirt and White Polo Shirt is now Shoreline Shirt
16th Sept 2017: Alien Emperor Suit is now Alien Armour Ballerina Male Costume is now Ballet Suit Male Bloody Feet is now Blood Splatter Morbid Male Boots is now Broken Heart Drifty Sweater has been revamped. Duplicate Female Shirts from the 12 star sign Treasure Chests have been replaced with star sign Tattoos Chocolate Bunny Male Costume is now Easter Bunny Costume