diff --git a/games-fps/source-engine/metadata.xml b/games-fps/source-engine/metadata.xml
new file mode 100644
index 000000000..a8501da77
--- /dev/null
+++ b/games-fps/source-engine/metadata.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+	<maintainer type="person">
+		<email>diceea@foxmail.com</email>
+		<name>Goldsrc233</name>
+	</maintainer>
+	<upstream>
+		<changelog>https://github.com/nillerusr/source-engine/releases</changelog>
+		<bugs-to>https://github.com/nillerusr/source-engine/issues</bugs-to>
+		<remote-id type="github">nillerusr/source-engine</remote-id>
+	</upstream>
+</pkgmetadata>
diff --git a/games-fps/source-engine/source-engine-9999.ebuild b/games-fps/source-engine/source-engine-9999.ebuild
new file mode 100644
index 000000000..488a59a7d
--- /dev/null
+++ b/games-fps/source-engine/source-engine-9999.ebuild
@@ -0,0 +1,45 @@
+# Copyright 2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+PYTHON_COMPAT=( python3_11 python3_12 )
+PYTHON_REQ_USE='threads(+)'
+
+inherit waf-utils git-r3 python-any-r1
+
+DESCRIPTION="A 3D game engine developed by Valve"
+HOMEPAGE="https://github.com/nillerusr/source-engine"
+EGIT_REPO_URI="https://github.com/nillerusr/source-engine.git"
+
+LICENSE="Source-SDK"
+SLOT="0"
+IUSE="debug"
+BDEPEND="${PYTHON_DEPS}
+		 media-libs/libsdl2
+		 media-libs/freetype
+		 media-libs/fontconfig
+		 sys-libs/zlib
+		 media-libs/libjpeg-turbo
+		 media-libs/libpng
+		 net-misc/curl
+		 media-libs/openal"
+
+src_configure() {
+	local conf=(
+		'-8'
+		$(usex debug '-T debug' '-T release')
+	)
+	waf-utils_src_configure "${conf[@]}"
+}
+
+src_install() {
+	waf-utils_src_install --destdir="${ED}/opt/source-engine"
+}
+
+pkg_postinst() {
+	einfo "To play Half-Life 2,"
+	einfo "you must legally own a Half-Life 2 copy,"
+	einfo "then copy the 'hl2' folder into"
+	einfo "/opt/source-engine/usr"
+}
diff --git a/licenses/Proton b/licenses/Proton
old mode 100755
new mode 100644
diff --git a/licenses/Source-SDK b/licenses/Source-SDK
new file mode 100644
index 000000000..26b140203
--- /dev/null
+++ b/licenses/Source-SDK
@@ -0,0 +1,43 @@
+               SOURCE 1 SDK LICENSE
+
+Source SDK Copyright(c) Valve Corp.  
+
+THIS DOCUMENT DESCRIBES A CONTRACT BETWEEN YOU AND VALVE 
+CORPORATION ("Valve").  PLEASE READ IT BEFORE DOWNLOADING OR USING 
+THE SOURCE ENGINE SDK ("SDK"). BY DOWNLOADING AND/OR USING THE 
+SOURCE ENGINE SDK YOU ACCEPT THIS LICENSE. IF YOU DO NOT AGREE TO 
+THE TERMS OF THIS LICENSE PLEASE DON'T DOWNLOAD OR USE THE SDK.  
+
+  You may, free of charge, download and use the SDK to develop a modified Valve game 
+running on the Source engine.  You may distribute your modified Valve game in source and 
+object code form, but only for free. Terms of use for Valve games are found in the Steam 
+Subscriber Agreement located here: http://store.steampowered.com/subscriber_agreement/ 
+
+  You may copy, modify, and distribute the SDK and any modifications you make to the 
+SDK in source and object code form, but only for free.  Any distribution of this SDK must 
+include this LICENSE file and thirdpartylegalnotices.txt.  
+ 
+  Any distribution of the SDK or a substantial portion of the SDK must include the above 
+copyright notice and the following: 
+
+    DISCLAIMER OF WARRANTIES.  THE SOURCE SDK AND ANY 
+    OTHER MATERIAL DOWNLOADED BY LICENSEE IS PROVIDED 
+    "AS IS".  VALVE AND ITS SUPPLIERS DISCLAIM ALL 
+    WARRANTIES WITH RESPECT TO THE SDK, EITHER EXPRESS 
+    OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, IMPLIED 
+    WARRANTIES OF MERCHANTABILITY, NON-INFRINGEMENT, 
+    TITLE AND FITNESS FOR A PARTICULAR PURPOSE.  
+
+    LIMITATION OF LIABILITY.  IN NO EVENT SHALL VALVE OR 
+    ITS SUPPLIERS BE LIABLE FOR ANY SPECIAL, INCIDENTAL, 
+    INDIRECT, OR CONSEQUENTIAL DAMAGES WHATSOEVER 
+    (INCLUDING, WITHOUT LIMITATION, DAMAGES FOR LOSS OF 
+    BUSINESS PROFITS, BUSINESS INTERRUPTION, LOSS OF 
+    BUSINESS INFORMATION, OR ANY OTHER PECUNIARY LOSS) 
+    ARISING OUT OF THE USE OF OR INABILITY TO USE THE 
+    ENGINE AND/OR THE SDK, EVEN IF VALVE HAS BEEN 
+    ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.  
+ 
+       
+If you would like to use the SDK for a commercial purpose, please contact Valve at 
+sourceengine@valvesoftware.com.