diff --git a/exl/base_math.fzs b/exl/base_math.fzs
deleted file mode 100644
index b7e15c7..0000000
--- a/exl/base_math.fzs
+++ /dev/null
@@ -1,7 +0,0 @@
-printline(2 + 2 * 2);
-printline(-1 + 1);
-printline(2 ^ 2);
-printline(1 + 1 * 1 / 1);
-printline(4 % 2);
-printline(10 / 2);
-
diff --git a/exl/borrow.fzs b/exl/borrow.fzs
deleted file mode 100644
index 80c3d38..0000000
--- a/exl/borrow.fzs
+++ /dev/null
@@ -1,46 +0,0 @@
-class A
-{
-  uint some;
-}
-
-fn doSome(A a) A
-{
-  // NOTE: section below won't change `a.some` value
-
-  if (a.some < 1)
-  {
-    a.some = 1;
-    return a;
-  }
-
-  return a;
-}
-
-fn doSomeNew() A
-{
-  if (1 == 1)
-  {
-    return new A;
-  }
-}
-
-A a = new A;
-a.some = 0;
-if (a.some != 0)
-{
-  printline("Test failed (first a.some != 0)");
-  exit(1);
-}
-else printline(a);
-
-a = doSome(a);
-if (a.some != 1)
-{
-  printline("Test failed (2nd a.some != 1)");
-  exit(1);
-}
-else printline(a);
-
-A b = doSomeNew();
-printline(b);
-
diff --git a/exl/class.fzs b/exl/class.fzs
deleted file mode 100644
index a7ac0f5..0000000
--- a/exl/class.fzs
+++ /dev/null
@@ -1,36 +0,0 @@
-class Point
-{
-  int x;
-  int y;
-
-  // Move point by [dx,dy]
-  fn move(int dx, int dy) {
-    this.x = this.x + dx;
-    this.y = this.y + dy;
-  }
-}
-
-Point obj = new Point;
-obj.x = 1;
-obj.y = 2;
-
-printline("Current X,Y:");
-printline(obj.x);
-printline(obj.y);
-
-// NOTE: WHY THE FUCK THIS FUCKING COMPILER REQUIRES ';' AFTER '='?!
-//      |
-//      v
-obj.move(9, 8);
-printline("X,Y after move:");
-printline(obj.x);
-printline(obj.y);
-
-if (obj.x == 10 && obj.y == 10)
-  printline("Test passed");
-else
-{
-  printline("Test failed");
-  exit(1);
-}
-
diff --git a/exl/comment.fzs b/exl/comment.fzs
deleted file mode 100644
index 0fd39ee..0000000
--- a/exl/comment.fzs
+++ /dev/null
@@ -1,3 +0,0 @@
-// I'm a comment
-printline("Comment is skipped");;;;;
-
diff --git a/exl/conditions.fzs b/exl/conditions.fzs
deleted file mode 100644
index a49e79d..0000000
--- a/exl/conditions.fzs
+++ /dev/null
@@ -1,20 +0,0 @@
-bool flag = true;
-
-if (!flag)
-{
-  printline("buhhh, flag is not true");
-  exit(1);
-}
-else if (2 + 2 >= 4)
-{
-  printline ("two plus two is four");
-}
-else {
-  printline("gotcha");
-  exit(1);
-}
-
-{
-  printline("block after");
-}
-
diff --git a/exl/fn.fzs b/exl/fn.fzs
deleted file mode 100644
index 2d6214c..0000000
--- a/exl/fn.fzs
+++ /dev/null
@@ -1,32 +0,0 @@
-fn fib(int n) int
-{
-  if (n <= 1)
-    return n;
-
-  return fib(n - 1) + fib(n - 2);
-}
-
-fn sum(uint a, uint b) uint
-{
-  return a + b;
-}
-
-printline("Test #1: fibonacci");
-int result = fib(7);
-if (result == 13)
-  printline("Recurse test passed");
-else
-{
-  printline("Recurse test failed");
-  exit(1);
-}
-
-printline("Test #2: sum");
-if (sum(2, 2) == 4)
-  printline("Sum test passed");
-else
-{
-  printline("Sum test failed");
-  exit(1);
-}
-
diff --git a/exl/hw.fzs b/exl/hw.fzs
deleted file mode 100644
index 131b32e..0000000
--- a/exl/hw.fzs
+++ /dev/null
@@ -1,2 +0,0 @@
-printline('hello, world');
-
diff --git a/exl/print_empty.fzs b/exl/print_empty.fzs
deleted file mode 100644
index 67c1545..0000000
--- a/exl/print_empty.fzs
+++ /dev/null
@@ -1 +0,0 @@
-printline("");
diff --git a/exl/problematic_hw.fzs b/exl/problematic_hw.fzs
deleted file mode 100644
index ec0ce93..0000000
--- a/exl/problematic_hw.fzs
+++ /dev/null
@@ -1 +0,0 @@
-printline("hello);
diff --git a/exl/raii.fzs b/exl/raii.fzs
deleted file mode 100644
index f9e2e83..0000000
--- a/exl/raii.fzs
+++ /dev/null
@@ -1,46 +0,0 @@
-class Animal
-{
-  str type;
-  str name;
-  int age;
-
-  fn copy() Animal
-  {
-    Animal cp = new Animal;
-    cp.type = this.type;
-    cp.name = this.name;
-    cp.age = this.age;
-
-    return cp;
-  }
-}
-
-Animal a = new Animal;
-a.type = "Cow";
-a.name = "Buryatka";
-a.age = 5;
-
-Animal b = a.copy();
-b.name = "Gavryusha";
-b.age = 10;
-
-printline(a);
-printline(b);
-
-printline("Types are same:");
-printline(a.type == b.type);
-
-printline("Names are NOT the same");
-printline(a.name != b.name);
-
-printline("1st age less than 2nd");
-printline(a.age < b.age);
-
-if (a.type == b.type && a.name != b.name && a.age < b.age)
-  printline("Test passed");
-else
-{
-  printline("Test failed");
-  exit(1);
-}
-
diff --git a/exl/variables.fzs b/exl/variables.fzs
deleted file mode 100644
index 6ba588d..0000000
--- a/exl/variables.fzs
+++ /dev/null
@@ -1,13 +0,0 @@
-uint work_it = 21 * 2 ^ 2;
-int  make_it = 10;
-
-u64  do_it;
-do_it = 15;
-
-printline(work_it);
-printline(make_it + do_it);
-
-char make_us;
-str floyd = "hello, Pink Floyd!";
-printline(floyd);
-