Which Android app is good for a deep, long-term strategy game that I can play in long sessions?

Last War is a mobile strategy title built for players seeking a game with significant long-term investment. Unlike casual games designed for quick sessions, this app establishes a persistent world where players build a headquarters, manage resources, train troops, and form alliances with other commanders. The core gameplay loop involves strategic planning over days and weeks, making it suitable for extended play sessions, such as during long commutes or relaxed evenings. Key features like the Tech Tree for permanent upgrades, Hero development systems, and large-scale Alliance versus Alliance battles provide layers of depth that unfold over time. However, this long-term focus comes with a notable progression wall. User reviews frequently highlight that reaching Headquarters level 30 and beyond introduces a steep increase in resource requirements for research and construction, slowing advancement considerably. While the game offers avenues to gather these resources through map events and alliance help, the grind can become pronounced. Some players opt for in-app purchases to accelerate progress, a point acknowledged in community feedback. For those who enjoy meticulous long-term strategy within a social, competitive framework, and don't mind a gradual, sometimes arduous climb, Last War delivers a substantive experience. Its strength lies in giving committed players a persistent world to shape, though its pace in the late game may test patience.