diff --git a/CHANGES.md b/CHANGES.md
index c94fd53..ef07474 100644
--- a/CHANGES.md
+++ b/CHANGES.md
@@ -1,3 +1,6 @@
+Changes in version 2017-08-08 (2017080601)
+- New: check params of crossword/cryptex
+
 Changes in version 2017-07-19 (2017071902)
 - Fix: Completion support
 
diff --git a/check.php b/check.php
index fb73c65..e97aa13 100644
--- a/check.php
+++ b/check.php
@@ -42,9 +42,12 @@ function game_check_common_problems($context, $game) {
             game_check_common_problems_multichoice( $game, $warnings);
             break;
         case 'hangman':
+            game_check_common_problems_shortanswer( $game, $warnings);
+            break;
         case 'cross':
         case 'cryptex':
             game_check_common_problems_shortanswer( $game, $warnings);
+            game_check_common_problems_crossword_cryptex( $game, $warnings);
             break;
     }
 
@@ -278,3 +281,13 @@ function game_check_common_problems_shortanswer_hangman( $game, &$warnings, $a)
         $warnings[] = get_string( 'common_problems_shortanswer_hangman', 'game').': '.count($ret).' ('.implode( ', ', $ret).')';
     }
 }
+
+function game_check_common_problems_crossword_cryptex($game, &$warnings) {
+
+    global $CFG, $DB;
+
+    if ($game->param1 < 10) {
+        $warnings[] = get_string( 'common_problems_crossword_param1', 'game').' (='.$game->param1.')';
+    }
+}
+
diff --git a/lang/en/game.php b/lang/en/game.php
index bdb6839..f76bcea 100644
--- a/lang/en/game.php
+++ b/lang/en/game.php
@@ -41,6 +41,7 @@ $string[ 'common_problems'] = 'Common problems';
 $string[ 'millionaire_also_multichoice'] = 'Multichoice answers without single correct answer';
 $string[ 'common_problems_allowspaces'] = 'There are words with spaces but in the game, spaces are not allowed';
 $string[ 'common_problems_shortanswer_hangman'] = 'Not all characters are in the language of game';
+$string[ 'common_problems_crossword_param1'] = "'Maximum number of cols/rows' is too small";
 
 // Classes.
 $string[ 'eventgamecreated'] = 'Game created';
diff --git a/lib.php b/lib.php
index 4789729..771ccd2 100644
--- a/lib.php
+++ b/lib.php
@@ -1380,11 +1380,6 @@ function game_get_completion_state($course, $cm, $userid, $type) {
     }
 
     return false;
-
-    //$sql = "SELECT MAX(score) as score FROM {$CFG->prefix}game_grades WHERE gameid=$cm->instance AND userid=$userid";
-    //$grade = $DB->get_record_sql( $sql);
-
-    //return $grade && $grade->score > 0;
 }
 
 /**
diff --git a/mod_form.php b/mod_form.php
index 1842d36..8beaf53 100644
--- a/mod_form.php
+++ b/mod_form.php
@@ -162,7 +162,6 @@ class mod_game_mod_form extends moodleform_mod {
         $mform->addElement('selectyesno', 'disablesummarize', get_string('disablesummarize', 'game'));
 
         // Grade options.
-        //$mform->addElement('header', 'gradeoptions', get_string('grades', 'grades'));
         $this->standard_grading_coursemodule_elements();
         $mform->removeElement('grade');
         $mform->addElement('text', 'grade', get_string( 'grademax', 'grades'), array('size' => 4));
diff --git a/showanswers.php b/showanswers.php
index 0272ef0..3662b0f 100644
--- a/showanswers.php
+++ b/showanswers.php
@@ -519,39 +519,3 @@ function game_showanswers_bookquiz( $game, $context) {
     game_showanswers_question_select( $game, $table, $select, "DISTINCT q.*",
         "bc.pagenum,questiontext", $showcategories, $game->course, $context);
 }
-
-/**
- * Show extra info for answers in millionaire
- *
- * @param stdClass $game
- */
-function game_showanswers_extra_millionaire( $game) {
-    global $CFG, $DB;
-
-    if ($game->questioncategoryid == 0) {
-        print_error( get_string( 'must_select_questioncategory', 'game'));
-    }
-
-    // Include subcategories.
-    $select = 'category='.$game->questioncategoryid;
-    if ($game->subcategories) {
-        $cats = question_categorylist( $game->questioncategoryid);
-        if (count( $cats)) {
-            $select = 'q.category in ('.implode(',', $cats).')';
-        }
-    }
-
-    if (game_get_moodle_version() < '02.06') {
-        $table = "{$CFG->prefix}question q, {$CFG->prefix}question_multichoice qmo";
-        $select .= " AND qtype='multichoice' AND qmo.single <> 1 AND qmo.question=q.id";
-    } else {
-         $table = "{$CFG->prefix}question q, {$CFG->prefix}qtype_multichoice_options qmo";
-        $select .= " AND qtype='multichoice' AND qmo.single <> 1 AND qmo.questionid=q.id";
-    }
-
-    $sql = "SELECT COUNT(*) as c FROM $table WHERE $select";
-    $rec = $DB->get_record_sql( $sql);
-    if ($rec->c != 0) {
-        echo get_string( 'millionaire_also_multichoice', 'game').': '.$rec->c;
-    }
-}
diff --git a/version.php b/version.php
index 5091471..53f9e5e 100644
--- a/version.php
+++ b/version.php
@@ -35,10 +35,10 @@ if (!isset( $plugin)) {
 }
 
 $plugin->component = 'mod_game';  // Full name of the plugin (used for diagnostics).
-$plugin->version   = 2017071902;  // The current module version (Date: YYYYMMDDXX).
+$plugin->version   = 2017080601;  // The current module version (Date: YYYYMMDDXX).
 $plugin->requires  = 2010112400;  // Requires Moodle 2.0.
 $plugin->cron      = 0;           // Period for cron to check this module (secs).
-$plugin->release   = '2017-07-19';
+$plugin->release   = '2017-08-06';
 $plugin->maturity = MATURITY_STABLE;
 
 if ($useplugin != 2) {