diff --git a/src/aim1_mod_activator/mod_activator.cpp b/src/aim1_mod_activator/mod_activator.cpp
new file mode 100644
index 0000000..4d9fba7
--- /dev/null
+++ b/src/aim1_mod_activator/mod_activator.cpp
@@ -0,0 +1,42 @@
+/*
+ * AIM mod_activator
+ * Copyright (C) 2024 lzwdgc
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <primitives/pack.h>
+#include <primitives/sw/main.h>
+#include <primitives/sw/cl.h>
+
+void activate(auto &&fn) {
+    // files will get new timestamp automatically
+    // our unpack_file() does not preserve timestamps
+    unpack_file(fn, fs::current_path());
+}
+
+int main(int argc, char *argv[])
+{
+    cl::opt<path> p(cl::Positional, cl::desc("<mod .zip archive>"), cl::value_desc("file"), cl::Required);
+
+    cl::ParseCommandLineOptions(argc, argv);
+
+    if (fs::is_regular_file(p)) {
+        activate(p);
+    } else {
+        throw std::runtime_error("Bad fs object");
+    }
+
+    return 0;
+}
diff --git a/sw.cpp b/sw.cpp
index 005dbab..d715f79 100644
--- a/sw.cpp
+++ b/sw.cpp
@@ -76,6 +76,9 @@ void build(Solution &s)
             ;
     }
 
+    auto &aim1_mod_activator = add_exe_with_common("aim1_mod_activator");
+    aim1_mod_activator += "pub.egorpugin.primitives.pack"_dep;
+
     auto &aim1_mod_maker = add_exe_with_common("aim1_mod_maker"); // actually a library
     aim1_mod_maker.Public += "pub.egorpugin.primitives.command"_dep;