Install this version:
emerge -a =kde-apps/kollision-26.03.90
If this version is masked, you can unmask it using the autounmask tool or standard emerge options:
autounmask =kde-apps/kollision-26.03.90
Or alternatively:
emerge --autounmask-write -a =kde-apps/kollision-26.03.90
# Copyright 1999-2026 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2
EAPI=8
ECM_HANDBOOK="forceoptional"
PVCUT=$(ver_cut 1-3)
KFMIN=6.22.0
QTMIN=6.10.1
inherit ecm gear.kde.org xdg
DESCRIPTION="Simple ball dodging game"
HOMEPAGE="https://apps.kde.org/kollision/"
LICENSE="GPL-2" # TODO: CHECK
SLOT="6"
KEYWORDS="~amd64 ~arm64 ~loong ~riscv ~x86"
IUSE=""
DEPEND="
>=dev-qt/qtbase-${QTMIN}:6[gui,widgets]
>=kde-apps/libkdegames-${PVCUT}:6
>=kde-frameworks/kconfig-${KFMIN}:6
>=kde-frameworks/kcoreaddons-${KFMIN}:6
>=kde-frameworks/kcrash-${KFMIN}:6
>=kde-frameworks/kdbusaddons-${KFMIN}:6
>=kde-frameworks/ki18n-${KFMIN}:6
>=kde-frameworks/kiconthemes-${KFMIN}:6
>=kde-frameworks/kwidgetsaddons-${KFMIN}:6
>=kde-frameworks/kxmlgui-${KFMIN}:6
"
RDEPEND="${DEPEND}"
# TODO: || ( 7zip gzip )
BDEPEND="app-alternatives/gzip"
>=dev-qt/qtbase-6.10.1:6[gui,widgets] >=kde-apps/libkdegames-$(ver_cut:6 >=kde-frameworks/kconfig-6.22.0:6 >=kde-frameworks/kcoreaddons-:6 >=kde-frameworks/kcrash-:6 >=kde-frameworks/kdbusaddons-:6 >=kde-frameworks/ki18n-:6 >=kde-frameworks/kiconthemes-:6 >=kde-frameworks/kwidgetsaddons-:6 >=kde-frameworks/kxmlgui-:6
>=dev-qt/qtbase-6.10.1:6[gui,widgets] >=kde-apps/libkdegames-$(ver_cut:6 >=kde-frameworks/kconfig-6.22.0:6 >=kde-frameworks/kcoreaddons-:6 >=kde-frameworks/kcrash-:6 >=kde-frameworks/kdbusaddons-:6 >=kde-frameworks/ki18n-:6 >=kde-frameworks/kiconthemes-:6 >=kde-frameworks/kwidgetsaddons-:6 >=kde-frameworks/kxmlgui-:6
app-alternatives/gzip