diff --git a/games-arcade/taisei/Manifest b/games-arcade/taisei/Manifest
index 596ff60274..10f3f43feb 100644
--- a/games-arcade/taisei/Manifest
+++ b/games-arcade/taisei/Manifest
@@ -1 +1,2 @@
 DIST taisei-1.4.4.tar.xz 290331536 BLAKE2B 8dcd65265062f510e407494ab977a1f2d98937fef3657fb61cc582f8ec855dc8402c79fa059a9ceff52e45a0ff50fde810d72c3a1b270ed64824d6dcb42ab983 SHA512 18a65222db696dd634eb1dff625116bdbfff0c510498c9a73244facd724850d365d06776161fecbbee3d09c59472b0236b05a031aaf3b02c32d417a84267d428
+DIST taisei-1.4.5.tar.xz 307140508 BLAKE2B b128fb6c7dccc518e8bd0579300695475f028046287a3211da734df49d8a38c3eb60b1c939fce133434bf7dc43b13e2735080921c81ee3340d2702a893a54c4c SHA512 68ab8e234443c044b74cb423b1b64ac1a7a155505889dae3f086e0d82290a04169a40862f8ffad8773aaf6800f5c2e289f5d02d253d3bd87c693a9532f6f4339
diff --git a/games-arcade/taisei/taisei-1.4.5.ebuild b/games-arcade/taisei/taisei-1.4.5.ebuild
new file mode 100644
index 0000000000..214836282e
--- /dev/null
+++ b/games-arcade/taisei/taisei-1.4.5.ebuild
@@ -0,0 +1,88 @@
+# Copyright 2019-2026 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_{12..14} )
+
+inherit meson python-any-r1 xdg
+
+if [[ ${PV} == *9999* ]]; then
+	inherit git-r3
+	EGIT_REPO_URI="https://github.com/taisei-project/taisei.git"
+else
+	# Auto-generated tarballs lacks submodules, all of which are taisei subrepos
+	SRC_URI="https://github.com/taisei-project/taisei/releases/download/v${PV}/taisei-${PV}.tar.xz"
+	KEYWORDS="~amd64"
+fi
+
+DESCRIPTION="Clone of the Touhou series, written in C using SDL/OpenGL/OpenAL."
+HOMEPAGE="https://taisei-project.org/"
+LICENSE="MIT CC-BY-4.0 CC0-1.0 public-domain"
+SLOT="0"
+
+IUSE="doc lto +mimalloc"
+
+RDEPEND="
+	dev-util/glslang
+	media-libs/freetype:2
+	media-libs/opusfile
+	>=media-libs/libpng-1.5
+	>=media-libs/libsdl3-3.2.0[opengl]
+	media-libs/libwebp
+	media-libs/opusfile
+	app-arch/zstd
+	virtual/zlib:=
+	dev-libs/openssl:=
+	>=dev-libs/libunibreak-6.1
+	mimalloc? ( dev-libs/mimalloc:= )
+"
+# bug in dev-libs/cglm-0.9.3: https://github.com/taisei-project/taisei/issues/381
+DEPEND="
+	${RDEPEND}
+	>=dev-libs/cglm-0.7.8
+	!!~dev-libs/cglm-0.9.3
+"
+# dev-python/backports-zstd only required for <3.14 but python-any-r1 doesn't have python_gen_cond_dep
+BDEPEND="
+	>=dev-build/meson-1.8.0
+	sys-devel/gettext
+	${PYTHON_DEPS}
+	$(python_gen_any_dep '
+		dev-python/backports-zstd
+	')
+	doc? ( dev-python/docutils )
+"
+
+# BSD qsort_r(3) and Microsoft qsort_s(3) implicit declarations
+# https://bugs.gentoo.org/941235
+QA_CONFIG_IMPL_DECL_SKIP=(
+	qsort_r
+	qsort_s
+)
+
+src_prepare() {
+	# Path patching needed also without USE=doc (COPYING etc.)
+	sed -i "s/doc_path = join.*/doc_path = join_paths(datadir, \'doc\', \'${PF}\')/" \
+		meson.build || die "Failed changing doc_path"
+
+	# Remove blobs
+	rm -f external/basis_universal/OpenCL/lib/*.lib \
+		external/basis_universal/webgl_videotest/basis.wasm \
+		external/basis_universal/webgl/transcoder/build/basis_transcoder.wasm \
+		external/basis_universal/webgl/encoder/build/basis_encoder.wasm \
+		|| die
+
+	default
+}
+
+src_configure() {
+	local emesonargs=(
+		$(meson_feature doc docs)
+		$(meson_use lto b_lto)
+		-Dallocator=$(usex mimalloc mimalloc libc)
+		-Dstrip=false
+		-Duse_libcrypto=enabled
+	)
+	meson_src_configure
+}