Guide
What a new Rider actually needs in the first few hours: how eggs work, how the attack triangle resolves, and what Habitat Restoration changes. Written from the game's own systems, not from a walkthrough.
Eggs and hatching
Monsties come from eggs, and eggs come from dens. A nest in a den holds one egg; the monster inside is decided when you pick it up, and the pattern and weight of the shell hint at what it will be. Monsters you release through Habitat Restoration can also leave eggs behind, which is the reliable way to target a species you want.
The three attack types
Every attack is Power, Speed or Technical. Power beats Technical, Technical beats Speed, and Speed beats Power — a closed triangle. Winning the head-to-head in a duel damages the enemy and builds your Kinship gauge; losing it costs you the exchange. Watch what a monster leads with for one turn, then answer with the type that beats it.
Kinship and Synchro Rush
Filling the Kinship gauge lets a Monstie use its Kinship Skill, the flashy move tied to its species. Synchro Rush is the newer layer: the whole party lines up for a coordinated attack, which is where the damage in longer fights actually comes from.
Habitat Restoration
Releasing monsters into an area raises its Ecosystem Rank, and a higher rank changes what appears there — including which eggs you can find. If a species will not show up, the answer is usually to restore the habitat rather than to keep rerolling the same route.