- Respiratory System Quizzes
- Respiratory System Trivia
- Restaurant Trivia - Match the restaurant to the logo in this free fun guess game for guessing restau...
- Retro Block Puzzle - jigsaw fit matrix
- Rettet unseren Ozean
- RevisePal - GCSE Exam Revision
- Revivify
- Rewind 2020!
- Rhema Trivia
- Rhestr
- RhymieStymie
- Riddle Mania - Word guess game
- Riddle Master
- Riddle Me This - Quiz Game
- Riddle Quiz
- Riddle Rumble Game
- Riddle Rumble LT
- Riddle This Riddle That
- Riddles & Brain Teasers - Quiz
- Riddles & Brain Teasers Quiz
- Riddles - Stupid Questions
- Riddles 500+ Test Your Brain
- Riddles Brain Teasers Quiz Games ~ General Knowledge trainer with tricky questions & IQ test
- Riddles Mind Quiz Games : Puzzles & Brain IQ Test
- Riddles Puzzle Game IQ Test
- Riddles Quiz Brain Teaser Game
- Riddles — One riddle a day
- Riddles, Brain Teasers
- Riddles, Rebuses and Two Pics
- Rider Line 2D
- Rider Quiz -平成&令和ライダーversion-
- Rider Ride Along - Motorcycle Highway Driving
- RING MASTER - Fun tap the ring
- Ring of Fire: Drinking Game
- Ripley’s Slots! Vegas Casino
- Rise It Up!
- Rise!-move block to top
- River Crossing IQ - IQ Test
- River Crossing Puzzle
- River Fishing - Idle Fisherman
- River IQ 2 - Logic Test
- River IQ 3 - Brain Test
- River Legacy Discovery Trail
- RnB and Hip Hop Quiz Game
- RnB Music Quiz Soul
- Road Crossing Full
- Roadio
- Robin Hood Quiz Hunt
- Roblux - Quiz for Roblox Robux
- Robocon Quest
- Robot Car War Battle Arena
- Robot Dino T-Rex Attack
- Black TRex 2P
- Robot's Escape Adventure
- Robotcity
- Rock Paper Scissors: Challenge
- Rocket Common Core 1st Grade Quick Math Brain Test
- Rocket Rising-fun rocket games
- Roda Ceria : Inspirasi Jelajah Negara
- Roda Ceria : Kata-Kata Pembelajaran
- Roda Ceria Indonesia
- Roda Fantasi:Juara Jutawan
- Roda Impian - Musim Hari Raya
- Roll Block Bloxorz HD
- Roll The Dice 3D
- Roller Coaster Quiz
- Rolling Ball-New Year
- Rolling Dojo: Robot Building and Fighting
- Rolling Dojo: Robot Dinosaur& Mythical Animals - Trivia & Funny Puzzle & Dragon Game