Konami Code
Gaming's most famous cheat
The iconic button sequence (Up Up Down Down Left Right Left Right B A) created by Kazuhisa Hashimoto for Gradius that became the most recognisable cheat code in gaming history.
The Konami Code (↑↑↓↓←→←→BA) is the most famous cheat code in gaming history. Created by Kazuhisa Hashimoto to make Gradius easier during testing, it was left in the released game and spread to over 100 Konami titles and countless others as a gaming cultural touchstone.
Fast facts
- Sequence: ↑ ↑ ↓ ↓ ← → ← → B A
- Creator: Kazuhisa Hashimoto
- First game: Gradius (1986)
- Famous use: Contra (30 lives)
- Legacy: widely reused, though the often-cited “100+ games” figure is unsourced
Origin
The code belongs to the Famicom port, not the arcade game. Gradius reached arcades in 1985 without it; Kazuhisa Hashimoto added it to the 1986 home conversion, which is the version a tester had to replay until he could no longer finish it unaided.
| Aspect | Detail |
|---|---|
| Game | Gradius, Famicom port (1986) — not the 1985 arcade original |
| Purpose | Testing aid |
| Left in | Accidentally shipped |
| Effect in Gradius | Entered while paused; upgrades the Vic Viper’s weapons |
Why that sequence. It was picked to be “relatively easy for game testers to remember, but difficult to input accidentally.” Both constraints are doing work: a memorable code a player could stumble into would fire during ordinary play.
Why renderings disagree about Start. Because Gradius takes the code while paused, “the START is technically optional” — the game’s state changes as soon as the sequence completes, and Start only unpauses it so you can see the effect. “As a result, not all games include it in their implementations.” Nintendo Power printed it with Start; this entry prints it without; both were current.
The Contra Effect
| Without Code | With Code |
|---|---|
| 3 lives | 30 lives |
| “Almost necessary” to have a chance | Completable |
| Frustrating | Fun |
Contra made the code famous. Sega Retro records the effect on the game’s reputation: the code was “often dubbed the ‘Contra code’ or ‘30 lives code’, almost necessary for players to have a chance of beating the game.”
Widespread adoption
Nintendo Power documented it in January 1993 as a portable convention — “a long-standing code which makes for special circumstances in several games” — rather than one title’s cheat:
| Game | Effect | Entered |
|---|---|---|
| Contra | 30 fighters in reserve | Title screen |
| Life Force | 29 ships in reserve | Title screen |
| Gradius / Nemesis | Weapons and power-ups | Paused, mid-action |
| T.M.N.T. — Fall of the Foot Clan (Game Boy) | One-time energy recharge | Paused |
On Sega hardware the implementations are nameable: Castlevania: Bloodlines, The Jungle Book, King of the Monsters and Mega Turrican on Mega Drive; the Gradius, Salamander and Detana Twinbee Deluxe Packs, Parodius, Sexy Parodius and F1 Challenge on Saturn; ESPN International Track & Field on Dreamcast; and Super Monkey Ball Jr. on Game Boy Advance, which “teases the user if they try and use the Konami code on its title screen.”
⚠ The “100+ games” figure is not sourced, and the spread was slower than it sounds. “For many years, the Konami code was restricted to just Konami games, becoming more mainstream after the dawn of the internet” — and not even consistently within Konami, with “even Konami failing to include it in many of their releases.”
Beyond Konami
Other companies adopted it:
| Use | Context |
|---|---|
| Easter eggs | Hidden features |
| Websites | Secret pages |
| Pop culture | T-shirts, references |
Cultural impact
The code represents:
| Meaning | Significance |
|---|---|
| Shared knowledge | Gamer identity marker |
| Nostalgia | 1980s gaming era |
| Accessibility | Making hard games playable |
Legacy
Hashimoto passed away in 2020, but his code lives on. It appears in modern games, websites, and popular culture as an instantly recognisable symbol of gaming heritage.