Yeah your WAX wallet should work for most games mentioned, The only game listed requiring money to properly utilize is splinterlands. However any WAX game or Dapp utilizes the WAX systems CPU. Their is a public pool of CPU replenished daily but I recommend staking Earned WAX to CPU under resources. Doing so reserves WAX system CPU proportional to the amount of WAX staked, To unstake WAX it takes 3 days and can be facilitated here https://wax.bloks.io/ Staking also pays you WAX daily so its worth doing.