Online rummy, like its real-world counterpart, is a massively popular card game (or in the case of Rummikub, a tile game) that’s easy to pick up, easy to learn and not too difficult to master. That it relies primarily on skill, not chance, also makes it one of the few card games you can play for money even in places where gambling, both online and physically, is illegal.

If you do want to win big playing rummy online, though, there are a few things to keep in mind:

1. Practice for free. Some tournaments allow a few practice rounds, but most simply, there are loads of entirely free online rummy games to hone your skills on. And, of course, there’s always the option of playing some friendly games with friends and family. There’s no complex betting involved so playing for money and playing for free are virtually identical experiences. Take advantage of that fact.   
2. Develop the right skills. Beyond playing rummy, do activities or even play other games that stimulate your brain to think rationally and to become more observant. Keeping watch on other players and what they play may be somewhat more important in offline rummy, but it’s still a crucial skill for online rummy too.  
3. Learn basic rummy strategies. If you play rummy enough, you will start to pick up on some basic strategies that help you win games. This includes simple things like playing middle numbers (4, 5, 6, say) rather than end numbers (ace, 2, 3 or Jack, Queen King) and that melds made up of sequences of numbers are more pliable than three or four of a kind. You can search for these online but you will also learn them the more you play. 
4. Know the differences between different forms of rummy. There are actually numerous variants of rummy out there, with rummy 500 and gin rummy being particular favorites. The difference in gameplay is often very subtle and it often may just come down to how things are scored, but make sure you know the specific rules of the version of rummy you’re competing in. You can also master numerous styles, but at first it’s probably a good idea to master just one variant and play in those online tournaments. 
5. Choose the right skill level. Speaking of choosing between tournaments, try and look for tournaments that fit your skill level. Start off with low stakes, smaller tournaments when you’re starting out and only then move onto more competitive ones.  
6. Take advantage of bonuses and offers. One of the best things about playing online vs in-person is that online rummy often offers bonus rounds and cash bonuses that you won’t find in real-world tournaments.. This is because the online sphere offers far more possibilities and a wider array of tournaments so to keep ahead of their competitors, good online rummy sites will probably offer extra incentives to make you come back to them or to pick them in the first place.

With these simple tips in hand, it really doesn’t take much to make some decent money playing in online rummy tournaments.