Hard to advise without knowing your product metrics. But on general online games are notorious for low retention. A lifetime plan might make sense, since the anticipated lifetime might be low and economics would add up.
Pull up the historical data if you can on how lifetime plan performed in your company when it was in place. If you know retention for the users, that purchased the plan and the acquisition cost, you can check, whether the lifetime plan makes sense.
Pull up the historical data if you can on how lifetime plan performed in your company when it was in place. If you know retention for the users, that purchased the plan and the acquisition cost, you can check, whether the lifetime plan makes sense.