Infinite Galaxy by Camel
I started playing this mobile game about a year after it's release. I started out in Server 87 and played as a free player. As usual, if the content of the game is not productive for a free player, it really doesn't have much merits for play quality. Well I'm still playing it after two years plus even after multiple server mergers. I have also become a micro transaction player, but only after two years.
This is a space warship strategy game type, real time simulation. You collect and build a flagship and then build a collection of fleet warship. You make or join an alliance in a guild fashion. Donate to the alliance and level it up to allow more members. A standard build your tech attributes at the alliance level, expand your territory om space.
Early game strategy: There is a simple campaign mode that gives single player a somewhat story mode. This is where the free player mode is mostly focused on PVE. There is also a flight shooter mode and is free player in design too, but is limited to how far one gets in campaign mode as well. Now a big portion of the game is based on space exploration. So you send your probes out and wait till the come back. The further out you explore the more time requirement there is. Plus some side quests comes from those exploration discoveries. There is a limit to the campaign mode and it ends almost to easily. The same for the flight shooter mode as well, but it is more based on the enemies that are just too powerful to shoot down in the time limit.
Being a war strategy game, yeah you could shoot other players or become a victim yourself. So there is a race to become stronger. This is where paying players clearly have an advantage. There is a VIP level bonus and of course paying for it clearly gives on an advantage. Also giving that paying player the first flagship designed for PVP advantage. In simplicity even the very first payment package clearly gives a player advantage. Then there is luck when opening dropped gifts that may give one a bonus of a flagship or crew that defines one's stats. For a free player, yeah one is at the mercy of whatever the games gives you. For paid players, they can just buy the flagship or crew when such packages becomes available. Of course there are only certain things that a paid player are given access to.
Like all online war games, there is a need for a base of free players that will always be fodder for the paid players. Most free players will probably last about 6 months to just over a year of play time. It's mostly because free player contents ends and it's no fun being shot down at every event by paid players. Then there are whales that eat up everything the game has to offer. Of course most free players hate them, but the reality is these guys keeps the game free for the rest of players. One could say that high paying players probably spend about $5k to $10k a year on this game. The whales are spending over $100k a year on this game.
There are routine daily missions. There are weekly routines events. There are monthly events. Then there are tournament events. All are design to drop certain materials used for becoming stronger. Growing your battle strength through technological advancement and increasing your mining of resource amounts.
There have been many changes, as online games goes. Certain contents are gone forever while new contents become the core of the game. There are certain events that have been a once only and that's what makes online games unique in their own rights. There has been one cross collaboration event featuring the anime/manga Legend of Galactic Heroes.