Variant #2

Monopoly + Skill Tree = !

The second variant, which builds up from the first, pushes the same concept further.
It combines the mechanics of monopoly with skill tree mechanics.

Typically, the skill tree only directly affects single player. However, as the mobile games increasingly emphasize the social connection between players, a collaborative online skill tree will enforce this connection.

The possible implementations:  

• players share a same skill tree like the monopoly players share the same game board. The basic rules of this skill tree are similar to the rules of monopoly. 
• Once players gain certain coins/points from the game, they can enter the skill tree, use their coins/points and roll the dices to move. (Coins can be obtained from in-app purchased)
• Different power ups are represented similarly as the different properties in monopoly. 
• Players can invest their coins/points to gain the power up if they land on the power up spaces. If they land on the power ups they already gained, they can upgrade it with more coins/points. 
• However, the acquisition of power ups is not permanent, players could lose them similar to how players lose their properties in monopoly.
• On the other hand, gaining certain combinations of power-ups, players will gain rewards, including, but not limited to trophy, ability boost, coins/points reward or special costumes. 
• The chance cards will give players random ability boost, bonus costumes, and penalties. 
• The jail will cause the player temporarily lose partial of their power-ups until they finish playing certain number of games. (This can be instantly removed by in-app purchased)

Advantages of this variant:

1. The interactive skill tree enhances the social connection between players.
2. Replace the heavy strategy part with interesting and relaxed chance mechanics. This increases the replayability, and enjoyment. 
3. (This also usually indicates more profits.)

Problem:

However, more mechanics may need to be constructed to balance the game when certain players dominate the skill tree (like what usually happens in monopoly).