Let R be a ring and $$N \ge 2$$
N
≥
2
. First, we prove that any deconstructible class of modules $${\mathcal {F}}$$
F
over R induces two coreflective subcategories of the homotopy category $$\textbf{K}_N(\mathrm {Mod-}{R})$$
K
N
(
Mod
-
R
)
of (unbounded) N-complexes of right R-modules: the one whose objects are all N-complexes with components in $${\mathcal {F}}$$
F
, $$\textbf{K}_N({\mathcal {F}})$$
K
N
(
F
)
, and the one whose objects are the N-acyclic complexes with components in $${\mathcal {F}}$$
F
, $$\textbf{A}_N({\mathcal {F}})$$
A
N
(
F
)
. Second, we prove that for any decomposable class of modules $$\mathcal G$$
G
, the homotopy category of N-complexes, $$\textbf{K}_N(\mathcal G)$$
K
N
(
G
)
, is well generated. In particular, the homotopy category of N-complexes of projective modules is $$\aleph _1$$
ℵ
1
-generated, which extends the well known result of Neeman for $$N=2$$
N
=
2
.