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Case study · K40 Online Kalooki

A live card game, right to the penny, built in three days

A live online card game for UK Kalooki, built in three days: play with friends at the same table, balances right to the penny, and full owner controls.

Free, no obligation, and a written quote before any work starts.

k40online.com
A four-player game of Kalooki in progress on k40online.com: a green card table with three opponents, the stock and discard piles, laid melds, and the player's own thirteen cards along the bottom with a turn timer beside them
The live site
  • Play live with friends
  • Balances right to the penny
  • Full owner controls
  • Saves to the home screen
  • Easy to read and use

The result

How it changed the business

K40 Online Kalooki lets up to four people play UK Kalooki together, live, on a phone, a tablet or a computer, and it can be saved to the home screen like an app. It was built for a client, in three days. It has passed a security review, runs on its own server and is backed up every night. It is here because a card game has the same hard parts as plenty of business software: the rules have to be fair, the balances have to be right to the penny, and the owner has to be able to see exactly what happened and when.

What this means for your business

The hard parts of a system like this are not the screens. They are being fair, keeping the numbers right and showing the owner exactly what happened. A booking system, a loyalty scheme or a members' area needs the same three things at a smaller scale, and they are far cheaper to design in at the start than to bolt on after something has gone wrong.

What the owner gets

  • Play live with friends
  • Balances right to the penny
  • Full owner controls
  • Saves to the home screen
  • Easy to read and use

The build

What it does for the owner

  1. Every deal, rule, score and turn timer is handled centrally, not on the player's own phone, so nobody can cheat by tampering with their screen
  2. Credits handled as carefully as money: every movement is recorded and can never be edited, a stake is held before the game starts, and no game can pay out twice
  3. A player whose connection drops goes straight back to the same point in the game, with spare time so a short drop does not cost them the hand
  4. Full owner controls: players, credits, payouts and games, warnings about suspicious play, undoing a payout, a move-by-move replay of every hand, and every balance checked to the penny
  5. Built for older players: large type, a choice of three looks, adjustable text size, a four-colour deck, keyboard shortcuts, a buzz when it is your turn and a setting to calm the animations
  6. Works on a phone (sideways too), a tablet and a computer, and there is a demo version you can try straight away

Want a result like this for your business?

Tell me what your business does and where the time goes. You get a straight answer, and a written quote if there is a job worth doing.

Free, no obligation, and a written quote before any work starts.