Explainer
How Cheat Codes Work: Game Genie, Action Replay and the Konami Code
How video game cheat codes work, from the Game Genie to the Konami Code, with real examples: most of our cheats change only one or two bytes of a game.
Guides from the people who build the games on this site. When we give a tip, we test it first on the real levels, and we show the numbers.
Explainer
How video game cheat codes work, from the Game Genie to the Konami Code, with real examples: most of our cheats change only one or two bytes of a game.
Game list
Nine classic games from 1982 to 1996 that run free in your browser: River Raid, Battle City, Contra, Street Fighter II, Metal Slug and more, each with cheats.
Game guide
River Raid tips from the game's own code: a full tank lasts about 34 seconds at any speed, a depot fills you in 2 seconds, plus scores and extra jets.
Game guide
Every Battle City power-up explained from the game's code: helmet and clock about 10.6 seconds, shovel about 21 seconds, and what the three stars do.
Game guide
Contra cheats that work: the Konami Code gives 30 lives (we read the game's life counter to check), plus every weapon, the eight stages and 7 tips.
Game guide
Metal Slug tips for beginners: the 60-step timer really lasts about 4 minutes 20 seconds (we measured it), plus every weapon, the prisoners and the tank.
Explainer
Which colors go together and why: the color wheel, four easy schemes, the 60-30-10 rule and our test of 435 color pairs for contrast. Palettes to copy.
How-to
How to make a drip cake that drips just right: ganache ratios for dark, milk and white chocolate, about 90°F (32°C), a cold cake and one test drip.
How-to
Eight easy nail art designs for short nails with tools you already own: bobby pin dots, a mini French, stripes, an accent nail and more, step by step.
Game guide
Color by number tips tested on 12 pictures and 202 numbered areas: find every area, swipe instead of tapping, use hints well and keep three stars.
Game guide
How to bake all 12 Sweet Cake Shop orders for three stars: three swipes frost any tier, which extras cost a star, and every order step by step.
Game guide
How to earn three stars for every client in Nail Art Studio: two strokes paint any nail, what each look needs and what one slip costs. Tested in the game.
Measured
How browser emulators run classic arcade and Mega Drive games: inserting coins, keyboard and phone controls, save states, and how much each game downloads.
Explainer
Sonic 3 and Sonic & Knuckles are two halves of one 1994 game. Zones, characters, saving, lock-on cartridges and how to tell which one you are playing.
Game guide
Cadillacs and Dinosaurs is the 1993 Capcom arcade game many players know as Mustapha or Mustafa. Where the name comes from, the four heroes and how to play.
Game guide
Every special move in Street Fighter II: The World Warrior, from Hadouken to Spinning Piledriver, with simple steps for doing each one on a keyboard or phone.
Fix
Why a browser game stays black or stuck on loading. We broke 51 games on purpose: without WebGL 24 refused to start. Nine fixes in the order to try them.
Measured
We measured 51 browser games: the first visit downloads 13 KB to 96 MB, playing uses almost no data and a second visit is nearly free. All the numbers inside.
Game guide
The math behind number gate runner games: when ×2 beats +n, why ÷2 almost always loses, and what 144 gate pairs in Run for Love showed us.
Game guide
Coreball tips tested on all 60 levels: why you must aim ahead of the spin, how far the core turns while a pin flies and how to handle each spin pattern.
Game guide
Eight tank game tips tested by a bot in Tank Battle Arena: why sidestepping cuts turret hits from 62% to 6%, which upgrade to buy first and all 12 missions.
Puzzle guide
Nine water sort puzzle tips tested on 19,631 pours: which moves cause dead ends, when to use the empty tube and a step-by-step way to solve any level.
Puzzle guide
How to play Seat Jam and stop getting stuck: the rules, plus three seating rules that lift first-try wins on the hardest buses from 2% to 53%.
Puzzle guide
A step-by-step strategy for sliding block and unblock puzzles, tested on 60 levels: work backwards from the exit and move the key piece back when you must.
Troubleshooting
Arrow keys or the space bar scroll the page instead of moving your character? Why browsers do it, the quick fix for players and the code fix for developers.
Game list
Nine free games that run on any Chromebook right in the browser: no download, no sign-up, no ads inside the game. With controls and file size for each.