Buy uncle a kopi
The tip jar
SG Bumper Cars is free and it stays free: no paywall, no energy timer, and every level is unlocked by playing it. This page is for anyone who wants to buy the developer a drink anyway.

It buys you nothing, on purpose
A tip here unlocks nothing: no car, no paint, no coins, no badge, no leaderboard mark, no shortcut and no fewer ads. A kopi is a thank you, not a purchase, and we would like to keep it that way. If you are here for value for money, there is none: the road is that way.
The chit
Pick what you would buy him, then type that amount on the tip page. Prices are what the real thing costs, more or less, at a hawker centre uncle is willing to queue at.
Kopi O Kosong, $3
Black, no sugar, no nonsense. What uncle actually drinks at 3am.
Teh Tarik, Extra Pull, $5
Pulled so high the auntie at the next table complained.
Kaya Toast Set, $8
Two eggs, runny. Dark soy, white pepper. He slept four hours.
Chicken Rice, More Chilli, $12
Steamed, not roasted. Uncle takes the chilli very seriously.
Bak Kut Teh, Free Flow Soup, $20
Peppery until your nose run. Youtiao on the side.
One Kilo Mao Shan Wang, $38
Durian season. Uncle has no self control.
Chilli Crab, For Two, $68
Mantou extra. Wear the black shirt.
The Fish Slice, $100
Uncle pointed at the fish. Auntie never even look up. Cai fan is not economy anymore.
Or pay as you feel. Uncle is not fussy.
Where the money goes
SG Bumper Cars is made by one person in Singapore, at night, after work, with no publisher and no investor. Tips pay for the hosting, the domain, the Play Store listing and, yes, the kopi.
Tips go through Ko-fi, which takes nothing on tips; the card processor keeps roughly 2.9% plus 30 cents. That fee is why the chit starts at $3 rather than $1: on a one dollar tip, about a third would never reach uncle.
Free things that help just as much
None of these cost a cent, and a couple are worth more than $3 to a game most people have not heard of yet:
Tell one person
Word of mouth is the entire marketing budget. Send a friend a Kaki Duel and let the game do the talking.
Rate the Android app
A rating on Google PlayGoogle Play helps more people find the game than anything else we can do.
Report a bug
Uncle cannot test on every phone. Email kopitiam.games@gmail.com: the bug you shrugged off is probably ruining someone else's run.