  We define algebras of quasi-quaternion type, which are symmetric algebras of
tame representation type whose stable module category has certain structure
similar to that of the algebras of quaternion type introduced by Erdmann. We
observe that symmetric tame algebras that are also 2-CY-tilted are of
quasi-quaternion type.
  We present a combinatorial construction of such algebras by introducing the
notion of triangulation quivers. The class of algebras that we get contains
Erdmann's algebras of quaternion type on the one hand and the Jacobian algebras
of the quivers with potentials associated by Labardini to triangulations of
closed surfaces with punctures on the other hand, hence it serves as a bridge
between modular representation theory of finite groups and cluster algebras.
