Towers above, enemies in the trench
In this clip, ballistas stand on grassy cliffs and fire down into a trench while a column of enemy soldiers and large trolls pushes along it. The shot then cuts to a group of warriors fighting a troll on open ground.
The Steam page describes this as fighting on two fronts: towers and troops hold off waves that surge through the trenches, while heroes and warriors fight for islands and enemy strongholds. In a Steam discussion about the tutorial, a developer put the split more directly: units fight other island units, and towers handle trench enemies. Read the developer's reply.
Go deeper: Troops vs towers: who fights where.
Islands joined by bridges
The camera pans across a cluster of grassy islands joined by wooden bridges, with glowing, lava-cracked ground between them. Later shots show a fight on one island and a dark enemy structure.
According to the Steam store description, each island you capture becomes a foothold where you can raise towers, rally warriors, claim resources and build an economy. Taking an island is a commitment, so it helps to know what it adds before you attack.
Go deeper: Choosing which island to attack next.
Building on a hex grid
A white hex grid lights up over a grassy island, and wooden buildings appear one tile at a time.
The demo's economy runs on four resources: Wood, Food, Iron and Stone. When a purchase is blocked, the useful question is which material, or which piece of island space, is missing.
Go deeper: Resources guide: economy and expansion.
Ballistas on the cliffs, and a troll
A tile on a cliff edge is highlighted and a ballista is built on it, above a trench crossed by glowing cracks. Later, warriors surround a large troll with a skull icon over its head, and the clip ends on a base gathered around a tall, glowing blue stone.
The Forgotten Powers announcement recommends Ballistas and Eyodins for the Troll Rider, the demo's first fortress encounter. Read the announcement. The clip does not identify its troll as the Troll Rider, and it is not a tested setup.
Go deeper: Prepare for the Troll Rider.
Runestones between battles
The Steam description says ancient runestones unlock upgrades for towers, warriors and the economy, and that each run reshapes your strategy. In the demo, permanent Runes spending in the skill tree and Runestone choices during a run are different things, and some skill-tree purchases add options rather than an immediate bonus.
Go deeper: Runes, Runestones and the skill tree.
Try the demo
The Forgotten Powers demo is free on Steam. If you are new, start with the beginner guide.