However, the experience is significantly shaped by its free-to-play structure. Gameplay is governed by an energy system that limits consecutive play sessions, a point of frequent criticism in user reviews. Players report running out of energy in under an hour, which interrupts longer play sessions. Furthermore, the app frequently presents video ads and prompts for in-app purchases to refill energy or unlock content, which many find intrusive. While the core sorting gameplay is polished and the historical snippets are engaging, the progression pace is intentionally slow to encourage monetization. For players tolerant of these common mobile game systems, it offers a neat, knowledge-testing diversion. For others, the constant interruptions may outweigh the educational charm.
Key Features
Love the game, especially since all the bugs were fixed. Please update soon and add some new timelines. The sorting is fun, but the energy system really cuts your playtime short if you don't pay.
★★★★★Verified User Review